Cauterets to Barèges
Into the Bastan
Out of the spa town, over the Col de Riou, and back up the Bastan to where the high country begins.
GR10 Section 4: Cauterets to Luchon
Your walk from
Cauterets to
Luchon
You'll walk 113 kilometres through the French Pyrenees, taken from the spa town of Cauterets over the high lake country of the Néouvielle to the thermal valley of Luchon, with hard climbs, glacial lakes, and one final cirque to cross before the long drop into the Vallée du Lys.
French Pyrenees
France
Trail Essentials
- Start
- Cauterets
- End
- Luchon
- Distance
- 113 km70 miles
- Total Ascent
- 7,120 m23,360 ft
Difficulty
Demanding
Hilliness
Mountainous
Time to Complete
Hiker
5 days ~22 km/day
When to Walk
Best
Good
Avoid
JanFebMarAprMayJunJulAugSepOctNovDec
GR10 Section 4 runs 70 miles from Cauterets, a thermal town in the western Pyrenees, to Luchon in the Haute-Garonne — up the Bastan valley to Barèges, over Col d'Estoudou at 2,260m past the glacial lakes of the Néouvielle, through stone villages and the Val d'Aube, and over the Hourquette des Hounts Secs for the final drop into Luchon. This is the high middle of the French Pyrenees: long climbs, big descents, named cols, and refuge or village nights between walking days. A section for walkers comfortable on mountain ground who want a week of it in a row, rather than a weekend in the hills.
Walking the GR10 Section 4: Cauterets to Luchon
How The Trail Unfolds
Your trail divides naturally into three parts — not by day, but by altitude. You climb out of Cauterets through the lower valleys, cross the high lake country of the Néouvielle, then work back through villages to a final ridge above Luchon.
Barèges to Vielle-Aure
Across the Néouvielle
The high lake country, three big cols, and the longest descent of the section.
Vielle-Aure to Luchon
Over to Luchon
Through villages to a refuge above Lac d'Oô, then a final cirque and the long drop into Luchon.
Included with every trip
Your personalised
Trail Book
Everything you need for every day of your trail — built around your exact itinerary. Your route, your accommodation, your packing list. Ready before you leave, works offline when you're out there.
Tonight's accommodation
Check-in time, room type, phone number and directions — all in one place
Day-by-day trail description
Route map, elevation profile and written description for each stage
Packing list and pre-trip checklist
Everything you need, nothing you don't. Tick items off as you go
Works offline
Open it once with data and it's yours — no signal needed on the trail
Included with every trip
Your route on every device you use
Your custom GPX file is built around your exact itinerary — day by day, door to door. Load it onto any device or app before you set off and navigate with confidence.
Works with
Talk to a Specialist
Knows the trail. Plans yours.
Craig
Trail Specialist
This is the hardest section of the GR10 we sell. People tend to come to it having done the West Highland Way or Tour du Mont Blanc and wanting something bigger. Bring proper boots, not trainers, and don't underestimate the climb to Espingo — that one's the test of the week.
Craig has spent over ten years in adventure travel — most of it talking walkers through trails like this one. He's helped plan dozens of Pyrenees crossings, knows where people typically misjudge the climb day out of Germ, and has the calls in his pocket from refuge owners along the route.
Ask Craig about the GR10 Section 4: Cauterets to Luchon
If you want to talk through your timing, your fitness, your pace, or anything the planner can't answer — call. Most of our customers do, and Craig's the one who'll answer.
The Practical Side
Before You Book
The things walkers ask us most often — answered plainly, so you don't have to ring to find out.
How fit do I need to be?
You'll want to be comfortable walking around 16 km a day with a daypack on mountain ground, with sustained climbs of 1,000m or more on individual days. This is a high-mountain section. If that sounds too much, the Explorer pace at nine days breaks the same route into shorter stages — usually around 12 km a day, with more time at altitude.
When should I walk it?
June through September is the trail's reliable window. Snow can linger on the high passes into early summer — by mid-June the col crossings are usually clear, though conditions vary year to year. July and August are warm and busy on the refuges; September often gives the cleanest views and the quieter nights. Early-summer walkers should expect patches of snow on north-facing slopes.
Do you include luggage transfer?
Yes for most stages — your bag is moved between accommodations every walking day, up to 20 kg per bag. The Espingo Refuge night is the exception: the refuge is a high-mountain hut without road access, so you carry an overnight pack for that one stage. We send a clear packing list for that night.
What kind of accommodation do you book?
Small hotels, family-run guesthouses, and traditional gîtes in the valley villages. One night is in the mountain refuge at Espingo — basic, communal, with a shared dining room and bunk-style sleeping; not luxury, but a memorable night. Everywhere else has en-suite or private rooms where the village allows, with breakfast included.
Can I walk it solo?
Yes. The GR10 is one of Europe's best-marked long-distance paths, with red-and-white waymarks at every junction. In summer you'll see other walkers most days, especially around the refuge nights. Solo travellers pay a small single-occupancy supplement at the valley accommodations; the refuge night is shared regardless.
What's the realistic total cost?
Our Classic package starts at £889 per person for the seven-day Hiker pace, based on two people sharing. Add roughly €20–30 per day for lunches and drinks on the trail, plus your refuge night dinner (around €25–30). Transfers from Toulouse or Lourdes to Cauterets and back from Luchon are extra; we can advise on the best train and bus combinations.
Still not sure? Ring us on 0131 560 2740 — Craig usually answers.
Still Thinking?
Speak to Craig
If you've scrolled this far, we need to help you get onto this trail. The bit the planner can't help with — "is the pace right for me?", "is August really that busy?", "can we add a rest day in Keswick?" — that's a two-minute phone call. Most people who book the GR10 Section 4: Cauterets to Luchon ring first.