
Mérens to Bouillouses
Into the High Ariège
Mérens-les-Vals in the morning, the high lake country by nightfall, with a 2,480-metre col in between.
Mérens-les-Vals in the morning, the high lake country by nightfall, with a 2,480-metre col in between.

Self-guided · GR10 · France
You'll walk 85 kilometres through the high French Pyrenees, from a valley village in the Ariège up over a 2,480-metre watershed col and down through Mediterranean scrub oak to Vernet-les-Bains. A section of the GR10 that crosses from Ariège into Catalan country, with Pic du Canigou for company on the long descent.
“An amazing and very memorable experience”Bhagyashree & Akhil · Tour du Mont Blanc
Read the reviewsSection 7 is where the GR10 changes character for good — the Ariège gives way to Catalan country, the vegetation turns Mediterranean on the way down, and Pic du Canigou appears and doesn't really leave your sight again.
It's a genuine watershed, in the geographic sense and otherwise: the high cols and remote refuges of the middle Pyrenees are behind you, and the trail starts pointing toward the sea.
Here's how this section looks for most walkers. Everything here is a starting point — the planner below rebuilds it around your own pace and dates.
Walked at our hiker pace, this is where most of our customers finish each day. Take more days and we'll split the longer stages; take fewer and we'll lengthen them by using the stops in between. We know every option along the route, so your days end up the right length whatever pace you choose.
| Day | Stage | Distance | Ascent | Walking |
|---|---|---|---|---|
| 1 | Mérens-les-Vals toDay 2 stopover | 15.5 km | 809 m | 7 hrs |
| 2 | Day 2 stopover toDay 4 stopover | 15.4 km | 809 m | 7 hrs |
| 3 | Day 4 stopover toDay 6 stopover | 15.5 km | 810 m | 7 hrs |
| 4 | Day 6 stopover toDay 9 stopover | 23.1 km | 1214 m | 10½ hrs |
| 5 | Day 9 stopover toVernet-les-Bains | 15.5 km | 810 m | 7 hrs |
Your trail divides naturally into three parts — not by day, but by country. You climb out of the Ariège into the high lake country; you cross the Catalan plateau between two refuges; and from there, you descend through Mediterranean scrub oak toward Canigou's foothills.
Build your trip
Pick your pace, party size and dates. The itinerary, distances, nightly stops and the price all update live — no commitment until you're happy.
Your day-by-day itinerary updates live in the Your itinerary section below.
This is the itinerary you're building. Change the pace, party size or start date in the planner above and every stage, distance and date updates here.
You are booking the itinerary above: your walking days, your overnight stays and the support that carries you between them.
Organising this trail for friends? Build a group trip with individual payments
We'll start planning your trip right away. Not happy with anything? We'll adjust it or refund you — no questions asked.

The Association of Bonded Travel Organisers Trust Limited (ABTOT) provides financial protection under The Package Travel and Linked Travel Arrangements Regulations 2018 for Big Trail Adventures (member 5690). Protection is provided for non-flight packages. Full details in our booking conditions.
Your GR10 Section 7: Mérens to Vernet les Bains is planned from first step to final check-in. The stays, luggage, navigation, local knowledge and a real team behind you are all part of the same trip.
Self-guided, but properly supported. You turn up, you walk, you eat well, you sleep well. We handle the logistics.
This is not a generic guidebook. We build a private Trail Companion for your dates, your direction, your overnight stops and every day of your GR10 Section 7: Mérens to Vernet les Bains.
Where you'll stay
Small hotels and gîtes d'étape in the valley villages bookend three nights in mountain refuges — Bésines, Carança and Py — where dormitory beds and half-board are simply how it's done up there. We pick the village stays for comfort and let the refuges do what they do best.
Every trip is planned around your dates and party, so we can't promise you a specific inn — but we can promise the kind of welcome that makes a walking holiday feel like a proper holiday.
Self-guided, fully supported
Self-guided means the walking is yours and the logistics are ours. You set off on the GR10 Section 7: Mérens to Vernet les Bains when you want, walk at whatever pace suits you, and stop where you like — there is no group to keep up with and no leader setting the schedule. Everything that makes an independent long-distance walk hard work to organise is handled before you arrive.
There are no fixed departure dates. Choose your own start day, tell us how many nights you want, and the planner rebuilds the 85 km route around it.
We remove the awkward parts at both ends: quiet reassurance for a solo walker, and no unpaid-invoice chasing for the friend who gets a group moving.
Going solo
We lend solo walkers a satellite GPS tracker. It updates automatically, even away from phone signal, so you can walk freely while the people at home follow your progress.


Bringing friends
Plan a private GR10 Section 7: Mérens to Vernet les Bains with us and get one shared trip page. Every walker pays their own deposit by card and adds their own details—no bank transfers or payment spreadsheet.
Reviews from walkers
Every review here comes from someone who actually travelled with us — we only ask once the trip's over, and we don't edit what they say.
Different routes, same team doing the planning, the bookings and the hand-holding — so these say a lot about what to expect here too.
“An amazing and very memorable experience”
We had a really wonderful experience and are very happy that we went ahead with the trek. It was challenging at times, but overall it was an amazing and very memorable experience. The scenery, the trails and the whole journey were absolutely beautiful. Bhagyashree did have some issues with her knee during the trek, which made a few sections difficult. We didn't let that stop us — we completed most of the trek and, wherever necessary, adapted our plans and took a bus or train for certain stretches rather than putting too much strain on her knee. Managing the trek despite the knee issue made the achievement feel even more special.
Thank you once again for all your help and guidance in planning the trek. Will definitely recommend Big Trail Adventures to all.
“Solo or in a group, I would do this again tomorrow!”
One of the best experiences I have had. I did this solo and felt supported all the way with the BigTrailAdventures team, especially in inclement weather. The vistas were incredible and overnight accommodation was faultlessly organised. Pushing myself during the day ( I ran rather than walked the trail), and then being fed and watered in a hotel in the evening was a treat.
The planning was exceptional and all details were covered.
There is a special time every day when you are overcome with the beauty of the nature that you are seeing, the sweeping vistas and the gratitude for being able to experience this. It rejuvenates your soul.
“Awesome support from start to finish”
The hike, which challenged me in different ways each day, was great. There was so much to see in every direction. The Highlands are simply stunning, clouds and all. The stays were good for the most part, some better than others (one night my room was above the kitchen so it was quite noisy until late into the night and the haunted Inn was a bit much for me :)). The Rowardennan Hotel and Craig Nevis guesthouse were my favorites. All of them offered great breakfasts and most had dinner options with good selections as well.
The planning was amazing. No glitches, except for one minor one at the start where the luggage van changed their drop off location without my knowledge. Thankfully Craig was there in the morning and quickly figured out where they were and even dropped off my luggage for me. Everything else was planned and executed perfectly; my itinerary for each day included great detail of what to expect. The app was awesome and my friends and family loved tracking me every day with the GPS. I had read that the West Highland Way is very popular in spring (when I initially had planned to go) and late summer. It took a lot of back and forth communication about potential dates but Craig very patiently worked it all out. All communication was prompt and thorough. I very much appreciate all the support I received prior and during my adventure!! Thank you Craig!
There are so many moments I will carry with me for a long time, like my first glimpse of the Highlands, all the water everywhere, the coos, day 2 along Loch Lomond when I wished I was a mountain goat and was grateful that it did not rain, arriving at Kingshouse after 19 miles, midges (haha), and so much more.
You'll want to be comfortable walking 14 to 19 kilometres a day with sustained climbing — sometimes over 1,000 metres of ascent in a single day — and steady on your feet at altitude. The Hiker pace gives you six days to cover the 85 kilometres. The Explorer pace is the same six days, because the refuge spacing decides the rhythm of the walking days rather than the planner.
June to September is the trail's best window. Late June and September are quietest, with the refuges open and the weather generally stable. July and August are the warmest and busiest. May and October are possible but unreliable — snow can linger on the cols above 2,000 metres into early June, and the high refuges close in October. Avoid the winter months entirely.
Yes for the road-accessible stops — Mérens, Bolquère or Planès, and Vernet-les-Bains — your bag is moved between them, up to 20 kg per bag. The mountain refuges at Bésines, Carança, and Py aren't road-accessible, so you'll carry a daypack on those nights with what you need for the next 24 hours. We'll talk you through what to take and what to leave with the transfer.
Small hotels, family-run gîtes d'étape, and mountain refuges — never chains. In the villages (Mérens, Bolquère, Planès, Vernet-les-Bains) you'll have a private room with breakfast. The high-mountain refuges at Bésines, Carança, and Py offer dormitory beds and half-board: dinner, breakfast, and a packed lunch on request. Pillows and duvets are provided; you'll need to carry a sleeping bag liner.
Yes — and many do. The GR10 is well-signed throughout with red and white waymarks, the route doesn't require navigation skills beyond following the marks, and you'll meet other walkers at the refuges most evenings. Solo walkers need to book the refuges well ahead in July and August: single beds in dormitories sell out fast. Single-occupancy rates apply in the village hotels.
Our Classic package starts at £749 per person for the six-day Hiker pace, based on two people sharing. That covers accommodation, luggage transfer where the trail allows, planning, your trail book, and on-trail support. On the ground, budget €30 to €40 a day for lunches, drinks, and any extras at the refuges. Allow for travel to Mérens and from Vernet-les-Bains — the nearest airports are Toulouse and Perpignan.
Yes. Every GR10 Section 7: Mérens to Vernet les Bains trip we run is self-guided: you walk the route on your own, at your own pace, with no group and no guide. We do the planning and the logistics — an itinerary of 3 – 7 days built around the pace you choose, accommodation booked in your name along the 85 km route, your main bag moved between stays each day, GPX files and route notes for every stage, and a real person on the end of the phone while you're out there. You choose your own start date; there are no fixed departures.
On a guided trip you walk with a leader and a group to a fixed schedule. Self-guided means the day is yours: start when you like, stop for lunch where you like, walk fast or slowly, take a rest day. The route is waymarked and you navigate with the GPX and notes we provide. Everything that makes a trip complicated — accommodation, luggage transfer, the shape of each day — is arranged for you before you arrive.
Yes — the GR10 Section 7: Mérens to Vernet les Bains is a signed long-distance route and thousands of people walk it independently every year. What most walkers want help with isn't navigation, it's the 85 km of accommodation, the bag transfers, and getting the daily distances right. That's exactly what we take off your hands, while you still walk it under your own steam.
We do, both. We book walker-friendly B&Bs, inns and small hotels in your name at each overnight stop, with breakfast, and arrange door-to-door luggage transfer between them so you walk with a daypack. You'll get a full itinerary with every address, check-in detail and transfer time before you travel.
Most people take 3 – 7 days for the 85 km. Our planner lets you set your own pace and number of nights, so you can stretch the trip out with shorter days or compress it if you're used to back-to-back big days — the itinerary, accommodation stops and price all update as you change it.

Craig has walked the GR10 Section 7 in every season. Tell him your dates, party size and ability and he'll come back with a route that fits — or point you at a different section if this one isn't quite right.

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