One of the advantages of the GR 10 is that it can be hiked with minimal gear, as one can eat dinner and breakfast almost every day at the gîtes. Additionally the hiker can sleep outdoors on clear nights and pay for a bed in a gîte in inclement weather. On nights that only shelters (which usually have no food or staff) are available, pre-purchased food can be eaten.

If one plans to eat at gîtes and buy food from supermarkets that can be eaten without cooking, the absolute minimal gear in the summer months is:

• Sleeping bag or sleep sheet, and a mat for comfort.
• Goretex jacket and fleece or similar for cold or wet weather
• Long-sleeved shirt and pants
• Short-sleeved shirt and shorts (including shorts you can wear for swimming)
• Sunscreen and wide-brimmed hat
• Adequate footwear. Anything less than hiking boots may prove insufficient.
• Bottles for at least two litres of water, and a purification method for treating water from streams.
• Toiletries and a medical kit

Additionally, consider a rain jacket or fleece top for wet or cold weather.

If you plan to forgo the comforts and delicious food of the gites and hotels, also bring:

• Tent
• Cooking gear and food

A note on footwear: some four fifths of the hikers wear full hiking boots and thick socks. While running sneakers may suffice (and Choco-style sandals may work for a few days), your risk of injury is higher, and much of the trail involves hopping around on possibly wet and sharp rocks. Choose conservatively, depending on the length of your hike and your experience.

Distance

21.9 km

Duration

6-7¾ h

Elevation gain

↥ 1010 m

Elevation loss

↧ 950 m

Intermarché sells gas cartridges. For a broader selection of outdoor gear, especially beyond watersports, visit the large Decathlon store at 43.320614-1.837971 Decathlon in the Centro Comercial Txingudi near Irun (8 Rue des Orangers).

The hike starts from the 3 km long 43.371238-1.7857621 Hendaye Beach. This is below the old casino, now known as Résidence Croisière. Nearby is the Tourist Office. Buses run from the main train station, or you can walk from 43.369998-1.7643471 Gare Deux Jumeaux .

Leaving town, the route goes around the football stadium and climbs via Rue Errondenia and Rue de Pausoa. After about 3 h you reach the summit of 43.325644-1.72172 Xoldokogaina. The high point is at Mandale (530 m) on the Spanish border. From here, the path descends to the Col d'Ibardin (4¼ h), a popular spot for French shoppers due to cheap alcohol and tobacco.

The trail continues via Col des Poiriers and Col des Joncs before reaching Olhette.

• 43.373363-1.7722621 Tourist Office. Tourist information office. Toilets available. 
• 43.372065-1.754461 Camping Hendaye Ametza, 156 Bd de l'Empereur, 64700 Hendaye, ☏ +33 5 59 20 07 05. Family-friendly campsite near the beach. 
• 43.375312-1.7382872 Camping Eskualduna, Rte de la Corniche, 64700 Hendaye, ☏ +33 5 59 20 04 64. Well-equipped with sea views and a pool. 
• 43.368609-1.7474623 Camping Dorrondeguy, Rue de la Glacière, 64700 Hendaye, ☏ +33 5 59 20 26 16. Affordable option within walking distance of the beach. 
• 43.336012-1.6661241 Olhette. 65 m. No bus service; the nearest is in Ascain, 4 km away. Two gîtes: Manttu-Baïta at the southern end of the village and Trapero Baïta (Tel. +33 5 59 54 42 59) in the center. 
• 43.333333-1.7430563 Biriatou. A scenic Basque village 10 minutes from the main trail. Public toilets near the church.  
• 43.309258-1.7032994 Redoute de la Baïonette. Historic fortification near Mandale, located by modern border marker 9. Offers wide views. 
• 43.387766-1.6603895 Basque Tourist Office, 20 Boulevard Victor Hugo, 64500 Saint-Jean-de-Luz. Tourist info for the wider Basque region. 

Distance

21.1 km

Duration

6½ h

Elevation gain

↥ 730 m

Elevation loss

↧ 640 m

The steepest climb comes right at the beginning. For most of the route, you'll be on forest trails and, after Sare, quiet paved country roads. The trail initially ascends on a good path over the Col des Trois Fontaines (1½ h; a shelter is located 300 m away), then descends to the Col de St-Ignace, where the valley station of the cog railway to La Rhune is found. It continues to 43.312778-1.5802782 Sare (2¾ h), a local transport hub and one of Les Plus Beaux Villages de France. There's an outdoor swimming pool. The stage ends in 43.306667-1.4986113 Ainhoa . Also one of Les Plus Beaux Villages de France. The tourist information office (open 09:00-12:30, 14:00-17:30; closed weekends and holidays) is located at the side of the town hall. Local grocery stores are a bit pricey due to the village's popularity.

From Col des Trois Fontaines you can ascend La Rhune (905 m) either by cog railway (35 min) or on foot (3 km, 1¼ h; ↥↧ 300 m). The prehistoric 43.2683-1.571396 Grottes de Sare can be visited with prior reservation through the local municipality or online. Closed annually for a month after Epiphany. This stage is part of the European long-distance trail E9.

• 43.302381-1.5874541 Camping la Petite Rhune, ☏ +33 6 15 29 36 38. Includes a gîte d'étape. Reception hours: 08:30-12:30, 15:00-20:00; winter weekdays 09:00-12:00, 14:00-17:00. 

Distance

21.7 km

Duration

8½ h

Elevation gain

↥ 880 m

Elevation loss

↧ 850 m

This is a difficult stage — exposed to the sun at first, and especially challenging due to the steep rocky descent near the end.

At the old cemetery (389 m; 40') beside the 43.303339-1.4823837 Chapelle Notre Dame de l'Aubépine, a dramatic crucifixion scene of the Jewish itinerant preacher Jesus of Nazareth and two other criminals has been recreated. Traditional Basque hilarri gravestones are found here. The path then continues over the Col des Trois-Croix (510 m; 1h 20').

A good place to rest is at Ferme Esteben (2h 50', 580 m), a gîte d'étape with a bar-restaurant. The trail continues near the border, past Boundary Stone 77, partly on paved road. At Col des Veaux (550 m), you can take a 300 m detour into Spain to visit a venta (a small inn or shop).

From here, the trail climbs to the 43.272782-1.4166931 Col de Méhatche (716 m; 3¾ h). The descent past Boundary Stones 82 and 83 is secured with cables. From Col de Méhatche, you can ascend Artzamendi (926 m), easily identified by its radar dome at the summit. The nearby 43.265263-1.3890428 Grotte le Saint-que-Sue can also be visited.

Just before reaching 43.266667-1.3454 Bidarray , a bypass trail offers a shortcut to the next stage. For peak baggers, this route also gives access to several summits: Errebi (between the chapel and Col des Trois-Croix), Atxulegi (a 15' detour on the way to Col des Trois-Croix), and, in good weather, Mont Bizkayluze (701 m) and Gorospil (691 m).

The village is split into two parts, 600 m apart. The GR-10 passes through the upper section (where accommodation is located), while the train station lies in the lower part. The stone “Noblia” bridge, in its current form, dates to the 17th century. Parts of the Church of the Assumption are Romanesque. Traditional hilarri gravestones can be found in the old cemetery, and the Ferme Gastetto is a protected farmhouse in classic Lower Navarrese style.

• 43.266547-1.3472174 Gîte d'étape Aire Zabal. Stage accommodation in the upper part of the village. 
• 43.284583-1.3537275 Camping Amestoya. Campsite along the D908, 2 km north of the upper village. 

Distance

18.5 km

Duration

7½ h

Elevation gain

↥ 1250 m

Elevation loss

↧ 1250 m

This southward stage is demanding, especially due to the complete lack of water sources along the ascent. After passing the Iparla Ridge (950 m), the trail reaches an altitude of over 1000 m for the first time on the way to the summit. It then continues along the ridge to the Pic de Tutulia before descending to the 43.210791-1.384122 Col d'Harrieta (3¾ h, 808 m).

From the Col d'Harrieta, a side trail descends to Urdos (1¾ h), from where it's possible to follow the road into Saint-Étienne-de-Baïgorry.

The main trail continues across the Buztanzelhay summit (4¾ h, 1029 m), then down to the col of the same name (843 m). Here, the GR-10 turns left and descends steeply. The path crosses the D949 road several times — this road leads from the village to the ventas on the Spanish border at the Col d'Ispéguy. You can also reach this col via the ridge, 1½ km from Col Buztanzelhay.

If you want to skip entering 43.175-1.3463895 Saint-Étienne-de-Baïgorry (162 moh), you can join the next stage earlier at the Nive des Aldudes (6½ h, 162 m). There's a picnic area in the park and a supermarket that stocks gas cartridges. Locals play Rebot, a type of pelota, on two courts. The Château d'Etxauz is not open to the public. On the last Sunday in April, the village hosts a traditional folklore festival known as Nafarroaren Eguna.

The Nive des Aldudes valley occasionally experiences flooding and mudslides.

• 43.183695-1.3357626 Camping Municipal Irouleguy, Borciriette, 64430 Saint-Étienne-de-Baïgorry, ☏ +33 5 59 37 43 96. Municipal campsite near the village. 

Distance

19.2 km

Duration

5-7 h

Elevation gain

↥ 990 m

Elevation loss

↧ 980 m

This stage runs mostly on gravel paths and farm tracks. About an hour in, there's an optional detour at Col d'Aharza for a 35-minute climb to Oylarandoy, where a hermitage built in 1706 stands.

The GR-10 heads south to the Col d'Aharza (734 m; 2 h), where there's a water source, then turns east and circles around the 43.142148-1.307059 Munhoa (1023 m; 3½ h). The climb is fully exposed to the sun. The descent begins on the right-hand side.

For campers, there are two sites before 43.163222-1.2381116 Saint-Jean-Pied-de-Port: Camping de La Truite (March 1 - Dec 15), and closer to town, Camping Narbaitz (mid-March - mid-September; tent spaces from June 20).

Saint-Jean-Pied-de-Port lies at 170 m and is where three of the four French pilgrimage routes converge before entering Spain. From here, it's possible to continue directly onto the Camino de Santiago (via Roncesvalles).

• 43.16806-1.238842 Saint-Jean-Pied-de-Port railway station. Served by regional trains from Bayonne.  
• 43.166315-1.2330892 Maya-Sports, 18 Av. du Jai Alai, 64220 Saint-Jean-Pied-de-Port, ☏ +33 5 59 37 00 47. Outdoor gear shop across from the train station. Open Mon-Sat 09:00-12:00 and 14:00-19:00. 
• 43.163723-1.2347227 Refuge Municipal Ospitalia, 55 Rue de la Citadelle, 64220 Saint-Jean-Pied-de-Port, ☏ +33 6 17 10 31 89. Municipal refuge. Check-in from 14:30. 

Distance

16.2 km

Duration

5-5½ h

Elevation gain

↥ 870 m

Elevation loss

↧ 420 m

There are no supply points or public transport on this stage, but the walking is relatively easy. In the village of 43.1475-1.21757 Çaro (242 m), there is a public fountain next to the town hall.

If you choose to end the day early after 3¾ h in 43.104444-1.1955568 Estérençuby (231 m; two accommodation options), be aware that this adds an extra 400 m of ascent to the next day's stage.

Distance

20.7 km

Duration

6¾-8 h

Elevation gain

↥ 1410 m

Elevation loss

↧ 700 m

This stage is simple but offers little shade. The trail first climbs toward the Col on Ithurramburu (820 m), then continues ascending to just below the 43.0344-1.1069410 Occabe (1456 m).

On the Occabe plateau, 26 Neolithic stone circles — called Harrespil in Basque — have been found. These are believed to have been used for cremation rites.

A good rest stop is the upscale 43.036876-1.0746841 Restaurant Chalet Pedro (4¾ h). The associated lodge offers 10 beds. Across the stream at Le Kayolar, similar accommodation is available.

From here, the trail turns sharply right after 100 m and continues uphill for 6-7 km (300 m ascent) to the stage destination.

• 43.092037-1.1646588 Gîte d'étape Kaskoleta. Altitude 615 m. Offers 13 beds in 3 rooms plus a holiday apartment for 4. A scenic viewpoint with an information panel is 5 minutes away. 
• 43.036596-1.0348139 Gîte d'étape Chalets d'Iraty, D19, 64560 Larrau, ☏ +33 5 59 28 51 29. Key pickup and payment are handled at Col Héguichouria, 1 km before the site. There is a restaurant and bird observation post 500 m further on. 
• 43.03746-1.04941810 L'aire Naturelle de Camping. Natural campground with 50 pitches, located 3 km before the Chalets by the stream. Open June-October. Fresh bread available by reservation from 08:30. 

Distance

16.4 km

Duration

5-6 h

Elevation gain

↥ 440 m

Elevation loss

↧ 1380 m

In bad weather, the route along the west side of the 43.054722-1.02694411 Pic des Escaliers (1423 m) is not recommended. There are two alternative routes, but both are poorly marked. At the Ugatzé Ridge, the trail skirts the peak rather than summiting it.

To avoid the steep descent from Pic des Escaliers, stay on the road for about 600 m after the start, then turn off after 2½ km to reach Col Ugatzé. A short side trip allows you to summit Arthanolatzégagnia (an additional 35 min ascent and descent). Trail markings are sparse for several hours. After some time following mule tracks, you'll reach a road crossing at Beloscare (1173 m; 3 h).

Logibar marks the end of the stage, but you can also continue 2 km further to 43.018611-0.9558339 Larrau , which offers three accommodation options and a campground.

In bad weather, an easier alternative is to follow the paved road from Iraty directly to Larrau for a gentler descent.

• 43.018151-0.92771511 Auberge Logibar, Quartier Logibar, D26, 64560 Larrau, ☏ +33 5 59 28 61 14. Altitude 375 m. Dormitory beds from €17, half board from €50. Check-in from 17:00. Bus 60 serves the location. 

Distance

26.3 km

Duration

7½-9¾ h

Elevation gain

↥ 1200-1420 m

Elevation loss

↧ 900-1170 m

This stage leads through spectacular gorges. Follow signs to the Gorges d'Holzarté and ascend the trail to the 70 m long suspension bridge (50'), which spans the dramatic Ruisseau de Olhadubi gorge 150 m above the ground. On the far side, the trail continues uphill.

After 2 hours, you reach the Olhadubi stream — a possible spot for a refreshing dip. Nearby, the Cabane Cayolar d'Olhadubi (reached via a side path from the bridge) serves as an emergency shelter with space for 4-5 people. Continuing uphill, you'll reach the Abarrakia farm after just over 3 hours. The path then winds between farms, eventually reaching the point (4½ h) where the GR-10 turns sharply to the right.

The original GR-10 route bypassed the gorges entirely by heading up to the Plateau d'Adarkhotia after the Holzarté bridge. This shortcut saves 2.7 km (1¼ h) and 150 m of elevation gain.

After about 5 hours, you'll reach the 42.9784-0.880443 Col d'Anhaou (1383 m). From here, energetic hikers can summit nearby peaks such as Izeyto (1464 m) or Sarimendi (1484 m). The stage ends at 43.014167-0.85416710 Sainte-Engrâce . Sainte-Engrâce is home to a Romanesque church from the 11th century. From the village, a 9 km side trip (↥ 840 m, ↧ 135 m) takes you to the vast La Verna cave. Guided tours go up to 800 m deep — the main chamber is large enough to fit the Eiffel Tower. Bookings are handled through the Espace accueil Arrakotchepia, Quartier Calla, 64560 Sainte-Engrâce (Tel. +33 6 37 88 29 05). August is often very busy.

A detour south from the restaurant leads into the wild and romantic Gorges de Kakuetta. The trail is very steep and slippery, and entry tickets are (usually) sold at the restaurant.

• 42.995529-0.81022912 Auberge Elichalt, Next to the church, ☏ +33 5 59 28 61 63. Simple village inn located in the center of Sainte-Engrâce. 

Distance

11.6 km

Duration

4¾ h

Elevation gain

↥ 1200 m

Elevation loss

↧ 160 m

The trail climbs steadily from Sainte-Engrâce into the limestone highlands of the Pierre-Saint-Martin massif, marking the transition into more alpine terrain.

You ascend to the 42.969167-0.76754 Col de la Pierre-St-Martin (1760 m; border with Spain). Since 1373, the Tributo de las Tres Vacas — a cross-border tribute of three cows — has been held here every July 13 to settle grazing rights between the two valleys. A small shop at the parking area sells goat cheese. A ski area lies just over the border on the Spanish side. There is also a small shelter near Boundary Marker 62.

An optional 15-minute detour leads to the summit of Soum de Lèche (1839 m). The Grotte de la Verna, a massive cave chamber accessible by guided tour, lies 1 km (¾ h) off the main trail and requires prior booking (laverna.fr).

From the pass, descend to the first switchback, then turn right off the main track. The trail passes under two chairlifts and continues along the northern flank of the Pic d'Arlas. When you spot three large concrete water tanks, descend to the staffed mountain hut at Refuge Jeandel.

The ski resort village of 42.9778-0.74473611 La Pierre Saint-Martin is about 15 minutes off the trail and offers additional services.

• 42.978294-0.74936313 Refuge Jeandel, La Pierre Saint Martin, 64570 Arette. Altitude 1670 m. Dormitory accommodation from €18; half-board from €42.50. Staffed in summer. 
• 42.977355-0.74449512 Tourist Office La Pierre Saint-Martin, Maison de la Pierre, 75 D332, 64570 Arette, ☏ +33 5 59 66 20 09. Open only during the French summer holidays (mid-July to late August). Provides info on local lodging and two campervan pitches. Served by seasonal Bus 807 between Arette and Oloron-Sainte-Marie. 

Distance

15 km

Duration

5½-6¼ h

Elevation gain

↥ 400 m

Elevation loss

↧ 1200 m

This is a challenging stage, but the scenery is magnificent. Several rocky mountain paths are equipped with cables for safety.

The highest point is the 42.970218-0.7089945 Pas de l'Osque (1922 m), which requires a head for heights. The trail continues to the Pas d'Azuns (1873 m; 2¾ h), and a good first rest stop with water is the spring near the Cabane du Cap de la Baitch (1689 m; 3 h).

In wet weather, descending to 42.933889-0.63472212 Lescun (895 m) via the road is recommended, as the GR-10 becomes muddy and difficult to navigate.

From Lescun, the HRP route offers a very demanding variant over the Col d'Anie back toward Cabane du Cap de la Baitch.

• 42.950415-0.66583914 Centre de l'Abérouat. Staffed hut with a bar. Offers 20 rooms (2-5 beds each). Free tent camping nearby (bathrooms in the hut available for a fee). Best suited for groups; solo walkers must book in advance. 
• 42.934247-0.63524515 Gîte d'étape Maison de la Montagne, 1 ruelle de la Congasse, 64490 Lescun, ☏ +33 6 88 06 95 29. Comfortable accommodation for hikers in the center of Lescun. 
• 42.927822-0.64219916 Camping - Gîte du Lauzart, Bordé de Mougnague, 64490 Lescun, ☏ +33 5 59 34 51 77. Along the D340. About 20 minutes into the next stage. Open April-September. Campsite €14 + €4 per adult. 25 dorm beds available for €16; half board €42. 
• 42.999037-0.60057613 Tourist Office for the Vallée, ☏ +33 5 59 34 57 57. Located in Bedous. Provides information on the surrounding region. 

Distance

16 km

Duration

5½-6½ h

Elevation gain

↥ 850 m

Elevation loss

↧ 1150 m

The trail begins easily through pastoral countryside, then enters forested terrain, passing the Gîte d'étape and campsite on the Plateau de Lhers (2 h), and climbing to the Col de Barrancq (1601 m; 3¾ h).

From the Col de Barrancq, a side trip leads to the summit of Pic de Labigouer (2175 m), which takes just under 3 hours round-trip.

Lower down in the Parc d'Orce, within the commune of 42.909167-0.57277813 Borçe (5¾ h), lives the majority of the region's ~50 brown bears. The Gîte le Communal offers accommodation here.

The stage ends in 42.9125-0.57027814 Etsaut. Altitude 597 m. Located on the N-134 and served by the Canfranc-Oloron-Saint-Marie bus line. The former train station now houses the Pyrenees National Park visitor center. Accommodation available in the Gîte d'étape la Garbure behind the church (53 beds).  

Just outside Etsaut, the 42.886389-0.56277814 Fort du Portalet clings dramatically to the cliffs in two tiers, spanning a height difference of 150 m.

• 42.904517-0.57456615 Refuge animalier à Borce. open 10:00-18:00; admission €12. It functions as an educational wildlife refuge 

Distance

24 km

Duration

9½ h

Elevation gain

↥ 1640 m

Elevation loss

↧ 1210 m

The trail begins with the dramatic Chemin de la Mâture, a path carved into the rock face. It is not passable in icy or snowy conditions. You reach Grange Perry (1210 m) after 2 hours. A quarter of an hour later, at a junction, keep left. After 3½ hours, you arrive at the Cabane de la Baight de St-Cours (1560 m; shepherds only, June-September), located at the border. About 4 hours in, you cross a stream on a bridge. This is the last water source before the high pass.

The highest point of the stage is the 42.8519-0.496946 Col d'Ayous (2185 m; 5½+ h). On its eastern slope lie the Ayous Lakes, including the scenic Refuge d'Ayous. It's an ideal place to break this long stage.

The Col d'Ayous also marks a transition point between valleys: from the Chemin de la Mâture and Baigt de Sencours in the Aspe Valley to Bious-Artigues (1540 m) in the Ossau Valley, where pony rides and canoe rentals are available on the eastern shore. The lake is 6½ km from the pass (↧ 764 m).

From the pass, you can also summit Pic d'Ayous (add 30 min up and down), or detour 6 km to Lac Bersau — a longer alternative via the Vallon d'Aas is 9 km.

From the lake, descend on the D231 road, which includes switchbacks that can be shortcut. (Note: Refuge de Gabas is now permanently closed.)

The stage ends in 42.889764-0.42785815 Gabas , which offers two accommodations and a bar, but no grocery store. Located on bus route 806/806bis from Col de Portalet via Gabas to Laruns (15 km).

• 42.848448-0.49117617 Refuge d'Ayous. 10 minutes off the GR10 near Lac Gentau (6½ h). This refuge offers 47 beds and tent spaces and is open from mid-May to the first week of October. 

Distance

23 km

Duration

9-10 h

Elevation gain

↥ 1600 m

Elevation loss

↧ 1150 m

This is a long and difficult stage, not suitable for children. The Corniche des Alhas section requires a head for heights. Snow may linger into summer, making it hard to follow the waymarks. Water is scarce during the first four hours.

The trail follows the D934 road to the Artouste dam, then climbs through forest paths (1¼ h). Some parts pass through cliff-side ledges carved into the rock — the Corniche des Alhas — which have fixed cables for safety.

An easier alternative bypasses the Corniche via the Pont du Goua and the Gave de Soussouéou.

After 1¾ h, you reach a bridge near the Gave de Soussouéou waterfalls (1145 m). From here, a steep trail leads up to Houn de Mouscabarous (1361 m; 2¾ h), continuing uphill to Petite Arcizette (2293 m). Snow may persist at these elevations until July. After 6½-7 h, you arrive at the Hourquette d'Arre (2465 m).

Important: The path shown on some maps to the Géougue d'Arre (2619 m) is a mountaineering route, not a hiking trail.

An alternative route avoids the Hourquette d'Arre altogether: from the Cabane de Cézy, follow the red-and-white GR10 then switch to the red/yellow-marked GRP Tour de la Vallée d'Ossau, over the Col de Lurdé to Eaux-Bonnes (overnight possible) and Gourette (also served by Bus 806).

The GR10 does not go directly to Lac d'Uzious, but instead heads roughly north-northeast across a plateau, before turning east to descend. After about 8 hours, you reach Lac d'Anglas (2068 m), from where the trail continues along the outflow, then branches off to the right.

After over 9 hours, you arrive in the ski resort of 42.958056-0.33222216 Gourette (1350 m). Ski resort with two supermarkets; gas cartridges available at Intersport. Mostly closed outside the main season. Served in-season by Bus 806 (twice daily) from Parking Gourette Nord to Eaux-Bonnes, Laruns, and Pau. If needed, you can exit the trail early at the upper parking area (which has a bus stop) and start the next stage from there.

• 42.959502-0.33396118 Chalet-refuge CAF, ☏ +33 5 59 05 10 56. Mountain refuge with 32 beds in 4 dorms. €16.50/night (€8.25 for Alpine Club members) + €0.90 tourist tax. 

Distance

15 km

Duration

5¼+ h

Elevation gain

↥ 900 m

Elevation loss

↧ 1300 m

This is a relatively easy stage that crosses two mountain passes: the 42.959773-0.318767 Col de Tortes (1799 m; 1¾ h), and later, after crossing the D918 (popular with cyclists but too busy to follow safely), the 42.959729-0.31878 Col de Saucède (1525 m; 3 h 20').

Ten minutes after descending from this second pass, you'll reach a restaurant and gîte de séjour at the Col de Soulor on the D918 road.

From Col de Saucède, hikers can also make a short detour to summit the Pointe de Surgatte (1805 m; 90-100 minutes round trip).

Near the Pont de Lapadé, you can either cross the Gave d'Arrens or continue down into the village of 42.955556-0.21305617 Arrens-Marsous . Features tourist information and public toilets at the Maison Val d'Azun (Tel. +33 5 62 97 49 49). The village also has an outdoor swimming pool. A hiking festival, Eldorado, is held every two years for four days in late May. Call +33 800 65 65 00 by 17:00 the day before for weekday on-demand shuttle service to Lourdes.

Points of interest include the Romanesque Saint-Pierre Church (parts dating to 1200) and the Chapelle Notre-Dame de Pouey-Laün, a pilgrimage chapel located 600 m south along the D105. The area is part of both the Natura 2000 conservation network (Gabizos and the Arrens Valley) and the core zone of the Pyrenees National Park.

For a longer option, you can extend this stage to Gîte les Viellettes (2¼ h further), making a total of 20.5 km (8½ h; ↥ 1250 m, ↧ 1530 m).

• 42.957338-0.21324719 GCU Campground, 26 Rue des Paus, 65400 Arrens-Marsous, ☏ +33 5 62 97 43 06. Simple tent campground on the edge of town. 

Distance

20 km

Duration

6¾-7½ h

Elevation gain

↥ 1600 m

Elevation loss

↧ 500 m

From Arrens-Marsous (3½ km from the previous endpoint), you can follow the official GR10 or the more scenic GR de Pays Tour du Val d'Azun. The latter is slightly shorter but includes more climbs. Both routes rejoin shortly before the 42.921952-0.18188720 Gîte d'étape les Viellettes (2¼ h; 15 beds). About 700 m further on is the simple tent site La Pose (open May-September).

The official GR10 route passes through 42.937222-0.17916718 Estaing , a commune that includes three Natura 2000 protected areas: “Gaves de Pau et de Cauterets,” “Moun Né de Cauterets, Pic de Cabaliros,” and “Péguère, Barbat, Cambalès.” From here, the trail enters the core zone of the Pyrenees National Park.

You ascend toward Lac d'Estaing. Just before the lake is a guesthouse open Thursday-Sunday, 09:00-17:00 (summer only). On the far shore is another restaurant (open 10:00-18:00) and Camping Intercommunal. Brave hikers may try a swim in the cold waters.

The trail now climbs steeply through forest to the Cabane d'Arriousec (1400 m; 4 h). Another hour uphill takes you past the Cabanes de Barbat (left of the path), then a final climb brings you to the 42.8775-0.185569 Col d'Ilhéou (2242 m; 6+ h).

Just 5 minutes below the pass, you can turn left to reach the Crête du Lys, where the Courbet cable car operates in July and August. This offers access to the ski resort Cauterets-Le Lys (with a summer luge track) or direct descent into the town of Cauterets.

On foot, descend to the stream near the Cabanes d'Arras (6½-7 h). Turn right there and cross two more streams. The path then descends to Lac d'Ilhéou. At the lake's northern shore is the staffed Refuge d'Ilhéou. A designated bivouac area (aire de bivouac) is located about 10 minutes further south along the lake.

• 42.866046-0.17358421 Refuge d'Ilhéou (Refuge Raymond-Ritter), ☏ +33 5 62 92 07 18. Altitude 1988 m. 22 beds. Open from late May to late September. 

Distance

8 km

Duration

2½ h

Elevation gain

↥ 75

Elevation loss

↧ 1100 m

This is a leisurely downhill walk that brings you gently back to civilization in 42.889167-0.11361119 Cauterets . Scenic spa town with plenty of amenities, including a historic wooden railway station (now closed), a cinema, casino, and more. The tourist office is open Mon-Sat from 09:00-12:30 and 14:00-18:00. A special Office de la Montagne - Terre d'Alpinisme opens during the summer season. Cauterets flourished during the late 19th and early 20th centuries thanks to its thermal springs. The municipality operates two spas: Thermes de César in the village center and Thermes des Griffons in nearby La Raillère.

Accommodation options include three gîtes d'étape and Camping la Prairie. Local buses run every 30 minutes from June to October. Regional connections are available to Lourdes, Luz-Saint-Sauveur, and Gavarnie. A shuttle to Pont d'Espagne departs four times daily from the old train station.

The 30 km former railway line from Pierrefitte to Cauterets has been converted into a multi-use bike and hiking path.

Distance

15 km

Duration

6¼ h

Elevation gain

↥ 1400 m

Elevation loss

↧ 100 m

This is a demanding stage. From Cauterets, take the path behind the Thermes de César and head south. After 1¼ h you reach the hamlet of La Raillère (1044 m), where there are restaurants and a sulfur spa. Cross the bridge and continue up into the Val de Jéret, passing several waterfalls.

The trail leads to the Hôtellerie du Pont d'Espagne (3 h). From there, descend briefly along the road before turning right and ascending into the valley toward Lac de Gaube (1725 m, 4 h). The path crosses the stream three times via bridges as you continue toward the refuge.

• 42.79269-0.1413222 Refuge des Oulètes de Gaube.  

Distance

21 km

Duration

7½ h

Elevation gain

↥ 800 m

Elevation loss

↧ 1400 m

About 50 meters from the refuge, the trail begins a steady one-hour climb over rocky terrain. At a fork (65'), stay right and continue ascending. The 42.7792-0.1316710 Hourquette d'Ossoue (2734 m) marks the highest point on the entire GR10. Even in mid-summer, snow often lingers here.

After 20 minutes of descent, you reach the Refuge Baysselance.

Ascending Vignemale from here via the Glacier d'Ossoue is only for experienced mountaineers.

From the pass, the route heads southeast, passing the Grottes de Bellevue (2420 m; 3 h), artificial caves carved in 1880 by the explorer Henry Russell. The trail descends steeply to a stream, then follows it into a boulder field fed by glacial melt from the Glacier d'Ossoue.

The descent into the valley involves frequent climbs around cliffs and waterfalls. You enter the Vallée de la Canau (5+ h) and pass the Cabane de Sausse-Dessus. The next hour includes more ups and downs until you reach the Cabane des Tousaus (6¾+ h).

From there, cross a final ridge to reach the D923 road and descend to the stage endpoint, Chalet-refuge la Grange de Holle.

If you need more accommodation or supplies, continue to the main village of 42.732222-0.00944420 Gavarnie . From Gavarnie, you can take a day trip (or a bus from Luz-Saint-Sauveur) into the famed Cirque de Gavarnie. It's also possible to ascend Le Taillon (3146 m) from here for experienced climbers.

• 42.77928-0.1241323 Refuge Baysselance. (2651 m), which offers 58 beds and is staffed from mid-May to mid-October  
• 42.739446-0.02272924 Chalet-refuge la Grange de Holle, Route de Boucharo, 65120 Gavarnie-Gèdre, ☏ +33 5 62 92 48 77. Altitude 1480 m. Staffed hut with 62 beds.  
• 42.735356-0.01029316 Tourist Office, Le Village, 65120 Gavarnie-Gèdre, ☏ +33 5 62 92 49 10. Open 09:00-12:00 and 14:00-17:00; closed Sundays and Thursdays. 
• 42.735959-0.01084125 Gîte Le Gypaète, ☏ +33 5 62 92 40 61. Simple hiker accommodation in Gavarnie village. 
• 42.72774-0.00759926 Camping Bergerie, Chemin du Cirque, 65120 Gavarnie-Gèdre. Open early June to late September. Located near the entrance to the Cirque de Gavarnie. 

Distance

26 km

Duration

8-9½ h

Elevation gain

↥ 700-900 m

Elevation loss

↧ 1500-1660 m

Starting from Gavarnie village (via the D128 road) instead of the refuge shortens the route by 3 km (approx. 1 h).

The trail first leads to the 42.768646-0.00591527 Gîte d'étape le Saugué, located on the Plateau Soula de Saugue (1¾ h). This is a good option to break up the stage — the gîte has 21 beds and is open May to October.

The route winds northward, passing the Soum Haut (3¾ h), then descends gradually along the western slope of the Gavarnie Valley.

After 5¾-6 h, you reach the D921 road. Cross the Gave de Gavarnie via the Pont d'Esdouroucats and ascend again to a path above the highway.

From the south, you enter 42.871667-0.00194421 Luz-Saint-Sauveur via the Pont Napoléon (755 m; 7½ h), a dramatic bridge across the gorge. Well-equipped mountain town. The town has several historic churches, as well as a campsite with a grocery store. The Prime Meridian passes about 100 m east of the center. Numerous lodgings, 6 campgrounds, 2 supermarkets, and Intersport (gas cartridges). Bus 965 connects to Cauterets, Lourdes, and Tarbes. Bus to Barèges also available.

• 42.8317880.00154628 Camping Saint Bazerque, Sia, ☏ +33 5 62 92 49 93. Campground with grocery shop (mountain cheese), bar, and caravan spaces. Open 08:00-17:00. 

Distance

12 km

Duration

4½-5 h

Elevation gain

↥ 800 m

Elevation loss

↧ 300 m

To extend this stage, continue to Refuge d'Aygues Cluses for a total of 19 km (7½ h; ↥ 1560 m, ↧ 140 m).

Though short, this stage begins with a relatively long and steep ascent. The highest point is the 42.858690.06773411 Ruisseau de Bolou (1460 m).

On the descent, hikers can stop for refreshments at the Refuge de la Glère. This stage ends at 42.8966670.06522 Barèges . Composed of the hamlets of Artigalas and Cazaous, Barèges serves as a spa and mountain village. The local river, the Bastan, is called the gave. Note: the Jardin botanique du Tourmalet and the 1930s funicular are now closed. The town's website includes an accommodation and restaurant directory

• 42.8974230.06727929 Gîte d'étape l'Oasis, 2 Passage des Toys, ☏ +33 5 62 92 69 47. Open June-September, and also December-April during ski season (Barèges is part of the Domaine du Tourmalet ski area). 

Distance

23 km

Duration

route-dependent 7¾-9½ h

Elevation gain

↥ 1300 m

Elevation loss

↧ 700 m

The trail begins by climbing above the road toward the ski station at Tournaboup (1 h). It then veers south and ascends steadily. Good stopping points include the Cabane d'Aygues and, 10 km further on, the Chalet-Hôtel d'Orédon.

This stage enters the Néouvielle Nature Reserve, where dogs and wild camping are strictly forbidden.

The highest point is the 42.8750.060112 Col de Madamète (2509 m). From there, the path descends between alpine lakes: 42.8427780.14972217 Lac d'Aumar and Lac d'Aubert (5¾ h, 2190 m). A shuttle bus runs up to this point in high season, and there's an info panel at the end of the access road.

Here, the trail splits into two variants:

• Variant 1: continues along Lac d'Aumar
• Variant 2: detours south to the tip of Lac d'Aubert, then along the northern shore of Les Laguettes and Lac d'Orédon (6¾ h, 1856 m; camping and hotel at the south end)

Both variants rejoin at the Cap d'Estoudou pass (2260 m), followed by a steep descent.

A short detour from the pass allows for an ascent of Soump de Montpelat (↥ 214 m).

The path continues steeply downhill to Lac de l'Oule (1821 m; 7¾+ h). From here, head right to reach Refuge-Hotel de l'Oule.

• 42.8757780.15008330 Cabane d'Aygues. 
• 42.8261630.16923331 Chalet-Hôtel d'Orédon. open June 1 - Sept 30; 88 beds 
• 42.824770.20752532 Refuge-Hotel de l'Oule. Altitude 1819 m. Located at the dam wall. Open mid-June to mid-September. 20 beds and a bar. 

Distance

17-18 km

Duration

5-6½ h

Elevation gain

↥ 460 m

Elevation loss

↧ 1400-1500 m

From the refuge, the route follows the western shore of Lac de l'Oule.

GR10C variant: After 1½ h, there is a signed detour to the Cabane de Bastan.

The main trail turns directly east and climbs to the 42.82970.259613 Col de Portet (2215 m; 2¾ h). From here, it continues eastward, descending gently to the Pla de Castillon, then more steeply down to the D918 road (4½+ h) and onward to the stage endpoint 42.830.32583323 Vielle-Aure , an historic village with two Romanesque churches: Saint-Barthélemy and Saint-Pierre (in the Agos neighborhood), both dating to the 12th century. Bus connections to Saint-Lary-Soulan and Lannemezan (35 km).

• 42.8258520.32776433 Hôtel Aurélia, ☏ +33 5 62 39 56 90. Simple, hiker-friendly hotel in town. 
• 42.8273930.3359134 Camping La Mousquère, Nougaro, Autun, 65170 Bourisp. Open May 8 - last weekend of September. 
• There are three more campsites within 2 km north along the river valley.

Just 1 km south, the larger and livelier 42.8158330.32277824 Saint-Lary-Soulan offers a broader range of shops, accommodations, and services. The tourist information office is at the roundabout in the center; the supermarket is across the street. The wooden bus stop shelter is discreetly located about 50 m away, opposite the modern church on Avenue des Thermes.

Distance

13 km

Duration

4¾-5¾ h

Elevation gain

↥ 1170 m

Elevation loss

↧ 630-700 m

This is a straightforward, though poorly marked, stage that runs parallel to the D225 up to the 42.79190.3811114 Col d'Azet (1600 m).

From the pass, the route continues down to Loudenvielle, a village with shops, an outdoor pool, and the Balnéa Spa complex (open 14:00-19:30; €21 for 2 hours). Note: during the Pyrenees Bike Festival in early September, the area is overrun with mountain bikers.

The final 2-3 km involve a climb of about 220 m up to the hamlet of 42.7933330.42583325 Germ . Altitude 1339 m. A small village with 34 year-round residents, but many second homes and guest beds. Two old churches are worth visiting.

• 42.793610.42505835 Centre de Montagne de Germ, D130, ☏ +33 5 62 99 65 27. Open year-round. 70 beds in a large mountain center. 
• Auberge de Germ, a guesthouse with 11 rooms (33 beds), open year-round.
• 42.7967640.43745818 Peyresourde-Balestas Airfield (Aérodrome de Peyragudes). Also known as Altiport 007, as a James Bond film was shot here in 1997. The 470 m runway has a 15% gradient and is also used for paragliding.  

Distance

16 km

Duration

6-7½ h

Elevation gain

↥ 1200 m

Elevation loss

↧ 1060 m

This stage and the next are strenuous. They can be divided into thirds with overnight stops at the 42.7635270.5024436 Granges d'Astau (open May-Oct; 26 beds) and the 42.730510.4995537 Refuge d'Espingo (1967 m; 44 beds, mid-May-Oct; 15 emergency shelter places off-season). Camping is allowed near the lake.

Around the refuge is a “classic” mountaineering loop over the Pic des Spijeoles (3008 m), Grand Quayrat (3060 m), down to Lac du Portillon (2571 m) and the glacial Lac Glacé d'Oô (2664 m).

After the initial climb out of Germ, you enter the Val d'Aube. Follow the river on the left-hand side; after 1¾ h, across the valley (250 m away), lies the Cabane d'Ourtiga (1610 m).

The route ascends to the 42.7552340.46279415 Couret d'Esquierry (2131 m; 3½ h), where you cross into the Haute-Garonne department. After 4 h, you reach the Cabane du Val d'Esquierry.

From there, follow the D76 road down to the Granges d'Astau and an auberge (1139 m; 5 h). In July and August, a morning bus runs up from Luchon and returns in the evening.

The stage ends at 42.740.49219 Lac d'Oô , a scenic 42-hectare lake situated at an altitude of 1,507 m within the Natura 2000 reserve “Vallées du Lis, de la Pique et d'Oô.” Renowned since the 19th century for its spectacular waterfall, the lake is a popular destination for its natural beauty. Due to its protected status, camping, swimming, and dogs are not permitted in the area.

• 42.7445590.49091538 Refuge du Lac d'Oô, ☏ +33 7 84 56 55 88. Reached in about 6 h. By the lake shore at 1504 m. 

Distance

19-21 km

Duration

7-9¼ h

Elevation gain

↥ 1000-1130 m

Elevation loss

↧ 1900-2000 m

After Refuge d'Espingo, the trail becomes more difficult, with several rocky scree sections. You skirt the northern slopes of Hourquette des Hounts-Secs (2275 m).

Optional detour: From here, a 15-minute ascent (each way) leads to Cap de Bassiéret.

You continue over the 42.7872240.51785816 Col de la Coume de Bourg (2272 m, 4¾+ h), which may retain snow well into the summer.

Optional summit detours from the pass:

• Pic Céciré, 45 minutes up and down to the north
• Subescale, 40 minutes up and down to the south

After 5½+ hours, you reach (1802 m) Superbagnères, a summer-only (July-August) mountain hotel serving the ski area. While it offers meals and lodging, prices are high. The massive historic building can also be reached by gondola lift from Luchon, replacing the old cog railway.

The 42.7878920.5908143 Gondola base station in Luchon is located on the western edge of town and operates daily from 08:30 to 18:00 during the summer season.

If descending on foot, it is a steep 1200 m drop to reach 42.7905560.59388926 Bagnères-de-Luchon . This spa town marks the end of the central Pyrenean segment of the GR10. Regular bus services run to Montréjeau, where you can connect by train to Toulouse.

• 42.7680.57739 Superbagnères.  

Distance

8 km

Duration

2½-3 h

Elevation gain

↥ 600 m

Elevation loss

↧ 50 m

From the church in Luchon, head left along the footpath by the L'One river, crossing the road bridge toward Juzet-de-Luchon.

Optional detour: Visit the waterfall in Juzet-de-Luchon.

The trail continues via Sode to the day's highest point at the stage destination 42.8319440.61972227 Artigue . Altitude 1230 m. A small mountain village with a municipal gîte d'étape, open year-round, offering 12 dormitory beds and evening meals at the on-site restaurant.

Distance

21 km

Duration

7½-8½ h

Elevation gain

↥ 1100 m

Elevation loss

↧ 1750 m

The first half of this stage is a steady climb of over 1000 meters, initially on a gravel track. After 1¼ hours, you reach the Cabane de Saunères (1660 m), a basic mountain shelter. One hour later, you arrive at the Col de Peyrehitte (1947 m).

The trail continues along an exposed ridge around the Pic de Bacanère (2193 m; 3+ h), passing border markers 402-404. After the Col d'Aou (2093 m; 3½-4 h), the trail descends gradually across open alpine meadows.

At the Cabane d'Artigue (5+ h), potable water is available. Below this point, the path winds down gently through a series of switchbacks, eventually crossing a road bridge into 42.8733330.73611128 Fos . Altitude 544 m. Small village with weekday bus service to Melles and Saint-Gaudens (railway connections to Pau and Toulouse).

Alternative route (former GR10): From the Cabane d'Artigue, you can divert to the Cabane d'Artiguessans, then descend steeply to the Ruisseau de la Batch before climbing back up to rejoin the GR10. This saves about 15 minutes and 70 m of elevation gain.

• 42.8738450.73442440 Gîte de Fos, ☏ +33 5 61 94 98 59. Offers 20 dormitory beds, open year-round.  

Distance

18 km

Duration

6½-8 h

Elevation gain

↥ 1700 m

Elevation loss

↧ 300 m

It's a good idea to stock up on supplies in 42.8680560.75861129 Melles , which you reach after about 45 minutes. From the old customs house, the trail climbs steeply. Auberge de Crabère offers a comfortable stop.

• 42.8688890.75916720 Botanical Garden (À Fleur de Montagne). Small but charming community-run garden specializing in Pyrenean alpine flora. Open in summer, 10:00-19:00.  

From Melles, a narrow road leads uphill to the last farmhouse at Labach (2¼ h). The next 2+ hours are mostly through forest, climbing steadily. After about 5 hours, you reach the Cabane d'Uls shelter.

The path continues uphill to the Pas du Bouc (2170 m; 6+ h).

Optional summit detour: From here, the 42.82570.85821221 Pic de Crabère (2629 m) can be climbed in about 90 minutes round-trip. Brown bears have been reintroduced to this area.

The highest point of the day is the 42.8353850.86034117 Col d'Auéran (2176 m), which also marks the border into the Ariège department.

From here, it's a quick descent to Refuge de l'Étang d'Araing.

• 42.8350.87353441 Refuge de l'Étang d'Araing. Altitude 1956 m. Open June 1 to October 5. 52 beds, plus a 12-bed shelter area available off-season. Advance bookings accepted for groups on the two weekends before/after opening.  

Distance

8 km

Duration

3-4 h

Elevation gain

↥ 300 m

Elevation loss

↧ 1320 m

From the lake and refuge, the trail climbs to the Serre d'Araing (2221 m; 1 h).

Optional detour: Summit of Pic de l'Har (2424 m), approximately 50 minutes round-trip.

The descent into the valley follows faintly marked trails to the left of the power lines. Along the way, you'll encounter remnants of former lead mining operations. After about 2¾ hours, you cross a bridge and reach 42.834940.9349530 Eylie d'en Haut, a small hamlet with a 14-bed hut, picnic area, and a basic campsite located by the Lez river.

Distance

17 km

Duration

8¼ h

Elevation gain

↥ 1600 m

Elevation loss

↧ 1700 m

A strenuous stage with no food or lodging options along the way. The trail starts by crossing the Lez river, then turns sharply left and begins to climb through open terrain. After about 50 minutes, you cross a stream and ascend through forest for just over an hour. In autumn, the woods are full of blueberries—a favorite of the brown bears reintroduced here in the 1990s.

At a stone shelter (1660 m; 2½ h), the trail forks.

The GR10 continues to the right, up to the Col de l'Arech (1802 m; 3+ h). From there, the path turns left.

Optional detours:

• South to Tuc de Cagonilles (2196 m; 80 minutes round trip)
• From there, to the challenging Mail de Bulard (2750 m; 3 hours round trip)

After a short ridge walk, descend to the shepherd's hut Cabane d'Arech (1638 m; 3½ h). From here, follow the access track down, then branch left down a steep, gorse-covered slope. After 4 hours, you reach a stream.

About 40 minutes later, the ruins of Flouquet (1680 m) come into view. Continue to Cabane de Besset (1540 m; 6+ h), then ascend again for 45 minutes to Cabane Clot du Lac (1821 m; 7 h).

Passing the huts Cabane du Trapech-du-Milieu (1540 m) and Cabane de l'Artigue, you arrive at Maison du Valier.

The Mont Valier massif is a protected area of interest to birdwatchers. It hosts a variety of mountain bird species, including rare birds of prey, bearded vultures, and alpine species such as ptarmigans, black grouse, and capercaillie.

• 42.8308471.0325142 Maison du Valier. Altitude 927 m, located on the Pla de la Lau. Open March-October. Reception hours 16:00-19:30. 40 beds. 

Distance

18 km

Duration

7¼-9¼ h

Elevation gain

↥ 1200-1350 m

Elevation loss

↧ 1300-1490 m

A demanding stage with significant elevation gain and loss.

The trail climbs from Maison du Valier, following the high northern slopes along the ridges of Cap de Lauses (1892 m), Pic de Crabère (1925 m), and the Col d'Auédole (1730 m).

After more than 7 hours, you arrive at 42.853321.1458431 Esbintz.

Distance

19 km

Duration

6¼ h

Elevation gain

↥ 1200 m

Elevation loss

↧ 500 m

This and the following stage offer spectacular scenery in good weather.

From Esbintz, follow the D817 for the first 2 km to Borde de Galy. From here, you could take a detour to Seix (4 km) by continuing on the D817, then the D37, and turning right onto the D3, where you'll rejoin the GR10 near the Pont du Salat.

Continue mostly downhill through the countryside, crossing the Pont du Salat to reach Moulin Lauga (550 m; 2 h), which has a bakery and picnic area. Alternatively, you can rest 1½ h later at the Auberge des Deux Rivières.

• 42.8531511.14591943 Gîte d'étape Esbintz. 850 m. Dormitory with 10 beds. Open May-November. 
• 42.8321071.19823244 Auberge des Deux Rivières, ☏ +33 5 61 66 83 57. Open late May to late September 

Distance

16 km

Duration

4½-5 h

Elevation gain

↥ 700 m

Elevation loss

↧ 1300 m

Fit hikers can combine this stage with the previous one from Gîte d'étape d'Aunac (787 m), resulting in a 30 km day with 11¼ h walking time (↥ 1750, ↧ 1580 m).

From Refuge d'Aula, it's a steep but manageable 1½ h ascent to the 42.7769581.11800818 Bouche d'Aula (1998 m), then a descent to the Étang d'Areau, 100 meters lower.

Optional: The Pic des Aymesses (2036 m) can be climbed from the east side of the lake.

A farm road leads down to Faup, with shortcuts along the switchbacks, for instance near the Cabane d'Areau. Slightly below the Col de Pause (1527 m; 2¼ h), there is a parking area.

The 42.7899791.17843245 Camp site Rigaux Philippe lies just below the hamlet of Faup.

From Faup, descend along the D708 toward 42.7872221.18638932 Couflens , but before reaching the D3 junction, cross the bridge and climb on the opposite slope to Gîte de Rouze d'Ustou.

• 42.7896971.20592446 Gîte de Rouze d'Ustou, Prat de la Moule, Rouze d'Ustou, 09140 Couflens, ☏ +33561669545. 16 beds. Cheese from the farm. Open mid-June to mid-Sept. 

Distance

8.4 km

Duration

3-4 h

Elevation gain

↥ 800 m

Elevation loss

↧ 600 m

Follow the stream uphill for about 1¾ h to reach the Col de la Serre du Cot (1546 m).

Optional side trips:

• To the south, ascend the Pic de la Tese (2255 m; ↥↧ 3+ h).
• To the north, climb the Tuc de Peyre Mensongère (1711 m; ↥↧ 40').

From the pass, descend left onto a forest path, passing a few ruined farmhouses. The route eventually reaches the D38 road and leads into Saint-Lizier-d'Ustou.

Distance

23 km

Duration

9+ h

Elevation gain

↥ 1400 m

Elevation loss

↧ 1400 m

The hike begins at the southern end of Saint-Lizier. After crossing the pedestrian bridge, the trail climbs southeast to the Col de Fitté (1387 m), a former ski area. From there, it continues along the right side of the slope.

One alternative route begins at 42.7825721.2700433 Bidous. , following the Alet river south and then climbing steeply for over 2 hours to reach the Col de Fitté, where it rejoins the GR 10.

The trail curves around the southwest side of the Picou de la Mire (1741 m) and reaches the Col d'Escots (1618 m) after 3¾ h. The nearby Chalet de Beauregard restaurant is open from late May to September, 10:00-23:00.

Afterwards, the path continues up and down along steep slopes until it reaches the Ruisseau de Fouillet valley (4½ h). The Jasse du Fouillet crossing (1170 m) is reached after at least 5 h.

For a shorter option, follow the yellow-red waymarks of the Tour du Val du Garbet. This leads to the D8F road and directly into Aulus-les-Bains (7 h from Saint-Lizier).

The main route continues toward the plateau of Souliou and the Pic du Mont Rouge (1600 m). A side trip to Étang de Guzet offers a possible bivouac site.

The trail then descends toward the Ruisseau d'Ars (1485 m), crosses a bridge, and continues downward. After a second bridge (8½ h), the path becomes easier. A final bridge, Pont de la Mouline, crosses the Garbet River just before the trail enters 42.7908331.33777834 Aulus-les-Bains , a small spa town with a mini market at the traffic circle near the bridge and a tourist office next door.

• 42.7796961.26902347 Gîte Pyrénées AAA, Lareng, 09140 Ustou, ☏ +33967838934. 14 places in upscale cottages for 2-4 people. 
• 42.7629221.36150422 Cascade d'Ars. 260 m high waterfalls in multiple tiers, located 4½ km from Aulus. Takes 3-9 h round-trip to hike to them (↥ 530 m). 
• 42.7940361.33216648 Camping municipal le Coulédous. Also offers bungalows for 4-7 people. The gîte d'étape is a 12-person tent. 

Distance

11 km

Duration

5+ h

Elevation gain

↥ 1200 m

Elevation loss

↧ 300 m

The route climbs out of Aulus-les-Bains to the 42.7814311.40432919 Port de Saleix, where you'll find the 42.78131.414649 Refuge de Carol. From here, the ascent becomes steeper. The following section to the 42.7725021.41169220 Port de Bassiès is demanding but scenically rewarding. This area lies within the Mont-Calme nature reserve, where camping is prohibited.

Distance

variable

Duration

3½-5¼ h

Elevation gain

↥ 1385

Elevation loss

↧ 1385

This stage and the following one include several alternative routes and shortcuts that can be combined.

From the refuge, the GR-10 leads southeast along a slightly rocky trail for just over three kilometers, following the chain of lakes. At the outflow of the last lake, the Étang d'Escalès, the GR-10 bends to the right. Along the stream, there's an opportunity to descend toward the main road and the village of Auzat. Another descent option to the road appears about two kilometers further along the GR-10.

The main trail makes a sharp turn southward. From the aqueduct (1160 m; 2¼ h), the route maintains an elevation just below 1200 meters for around four kilometers, before descending the final 1½ kilometers into the village of 42.7168771.44959335 Marc, cutting across the switchbacks of the road. The Gîte Retrouvance de Mouret (12 places) is available for group bookings only.

From 42.7663891.48055636 Auzat.  , one can rejoin the GR-10 by heading 4 km south to Artiès and climbing back up. This avoids a significant part of the next stage. Alternatively, walking 6 km to Marc allows one to resume the full stage. To skip this stage, it is possible to go from Auzat directly to Goulier via two routes: one through Olbier (4.4 km), the other 6.1 km.

• 42.765091.41322150 Refuge des Étangs de Bassiès. 1933 m. Open late May to September. 

Distance

24.3 km

Duration

6-9 h

Elevation gain

↥ 900 m

Elevation loss

↧ 1100 m

From Marc, follow the path to Mounicou. A shelter is located a short way beyond, along the D8. This is where the ascent begins. After a few hundred meters, you can turn right at the 42.711.45754 Turn right marker and stay on the west side of Les Caldelets. From the 42.694171.4629651 Orri de Tignalbu, which has a water source, the path becomes very poor.

The main GR-10 trail continues uphill to the Refuge de Prunadière (1615 m, 2 h). Be sure to refill your water here. From there, it leads to a junction above the 42.73621.479352 Artiès shelter (985 m, 3¼ h). The path ascends steadily, passing the ruins of Pradières-d'en-bas, and arrives at Étang d'Izurt. A cable car runs to the lake. After a short climb, it's around 14 km downhill to 42.7552781.50333337 Goulier