Lacs des Bouillouses and Carlit pond loop

A beautiful hike in the eastern Pyrenees, about thirty kilometres from Villefranche-sur-Conflent. The site is superb, nicknamed the "Canadian Pyrenees", and you can see horses roaming free. The main loop takes 2½ hours, but you can add an extra hour to see a few more ponds and pass by the foot of Pic Carlit. It's well worth it.

Details

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  • Walking
    Activity: Walking
  • ↔
    Distance: 9.86 km
  • ◔
    Average duration: 3h 50 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 350 m
  • ↘
    Descent: - 347 m

  • ▲
    Highest point: 2,365 m
  • ▼
    Lowest point: 2,018 m

Photos

Description of the walk

To accommodate the flow of visitors, a car park has been set up on the D60 at the Pla de Barrès car park, and a paid shuttle service (please note that dogs must wear a muzzle on the bus - these are available for purchase at the departure point for €4) is available to take you to the Lac des Bouillouses dam, where the hike begins.

(S/E) Start at the end of the dam, leave the hotel on your right and follow the path. The start is a little rockier and steeper than the rest of the route, but you will quickly reach Estany del Viver (the junction of the loop).

(1) Turn left. A little higher up, at 2,160 metres, you will reach Estany de la Comassa, one of the largest lakes on the hike.

(2) You will quickly reach Estany Sec, which is poorly named as it is far from dry. A little higher up, at the crossroads, continue right to reach Estany de Vallell.

(3) Turn left to continue the slow climb on the alternative route. You will reach the fork at the foot of Puig Carlit.
You can shorten the route by following the Estany de Vallell on the right and joining the south-east return path.

(4) Take a hairpin bend to the right to start the return leg of the loop. Follow the Estany de Sobirans and Trebens lakes.

(5) Pass a small unguarded hut before walking along the Estany del Castellar. Cross the footbridge: here we came across several horses roaming free, magnificent! At the Estany de les Dugues, you will rejoin the path taken by those who did not take the alternative route.

(6) Continue straight ahead to reach the junction with the Estany del Viver, which you passed on the way there.

(1) Keep left and head towards the dam (S/E).

Waypoints

  1. S/E : km 0 - alt. 2,019 m - Lac des Bouillouses dam (La Bollosa) - Refuge des Bouillouses
  2. 1 : km 1.45 - alt. 2,145 m - Crossing the loop - Estany del Viver
  3. 2 : km 2.11 - alt. 2,166 m - Estany de la Comassa
  4. 3 : km 3.48 - alt. 2,225 m - Shortcut possible - Lac Bailleul (Estany de Vallell)
  5. 4 : km 4.92 - alt. 2,365 m - Fork in the path, turn right - Estany de Sobirans
  6. 5 : km 6.08 - alt. 2,310 m - Unattended hut. Estany el Castellar - Estany de Trebens
  7. 6 : km 6.94 - alt. 2,239 m - Estany de la Dugues
  8. S/E : km 9.86 - alt. 2,018 m - Lac des Bouillouses dam (La Bollosa) - Refuge des Bouillouses

Notes

The hike is accessible to all. Many families do it with children of all ages.

At the information point at the dam, you will find eco-friendly toilets, a water point and a shop selling guidebooks and maps.

There is no picnic area as such on the walk, but there are many places where you can sit by the ponds. The water in the ponds is necessarily cool due to the altitude. The route is very well signposted (yellow lines indicate the path to follow, yellow crosses indicate the path not to take).

However, it is advisable to wear good walking shoes as there are several rocky areas to cross and the path is quite stony overall.

Reviews and comments

4.9 / 5
Based on 36 reviews

Reliability of the description
4.9 / 5
Ease of following the route
4.8 / 5
Route interest
5 / 5
Marc Titi
Marc Titi

Overall rating : 5 / 5

Date of your route : Sep 18, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

An easy hike not to be missed... it's very pleasant and beautiful, nothing but pleasure;

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Frank46
Frank46

Overall rating : 5 / 5

Date of your route : Sep 01, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

One of the most beautiful hikes I have ever done, thanks to the beauty of the mountain landscapes: translucent ponds, peat bogs, forest trails, dry and wet grasslands, magnificent mountain panoramas at every turn.
In terms of difficulty, the biggest climb over the rocks is during the first half hour; the rest of the trail is easy, with wooden footbridges over the wet meadows.
Animals roam freely (horses, cows), wildlife (birds of prey, marmots at high altitude, frogs).
Vegetation at the end of August: heather, houseleek, carline thistle, juniper, columbine.
Weather conditions: hailstorms at the end of August, so bring the necessary equipment (sudden drop in temperature).

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User 247697

Overall rating : 5 / 5

Date of your route : Aug 26, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

A very popular route in summer.
The trail is a little difficult as there are quite a few large rocks to climb over.
But the view is worth the effort

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AlexDu66
AlexDu66

Overall rating : 5 / 5

Date of your route : Aug 12, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

Great hike in August, but far too crowded for my liking. Would do it again in the off-season. The scenery is magnificent.

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Ignyteers
Ignyteers
• Edited:

Overall rating : 5 / 5

Date of your route : Jul 18, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

Although it is true that this superb hike is popular, this is mainly only during the initial climb, as everyone disperses over the course of the kilometres. The landscapes with their lakes are simply fantastic!
This is a must-do hike if you're in the Font-Romeu area!
You can go there with your eyes closed... well, not quite, because the paths are quite rocky!

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User 19779255

Overall rating : 5 / 5

Date of your route : Jul 21, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

Access by shuttle bus and muzzle compulsory for dogs (€5.50 available at reception)
The walk is well signposted and not too busy. The start is a little difficult as you have to walk over some rocks.
The various lakes are magnificent and inhabited by ducks!
Beautiful views and great memories, go for it!

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User 17535422

Overall rating : 5 / 5

Date of your route : May 29, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

A beautiful, easy hike with breathtaking views. There are several variations, so you can tailor it to your liking. The only downside is that it's too crowded, and there's a lot of rubbish left behind by pseudo-hikers who don't respect nature.

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Brunet Alain
Brunet Alain

Overall rating : 5 / 5

Date of your route : May 22, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Great hike. Magnificent lakes that are definitely worth discovering.

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Marjorie6323
Marjorie6323

Overall rating : 4.5 / 5

Date of your route : Sep 03, 2024
Reliability of the description : Not used / Not applicable
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : Yes

Great hike in good weather ☀️, magnificent landscapes.
Accessible for families, but be careful on the first and last kilometres where you have to do a bit of scrambling.
Not too crowded in September.

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BUBU33
BUBU33

Overall rating : 5 / 5

Date of your route : Aug 26, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

Hello,
This hike is a classic in this part of the Pyrenees! The locals will tell you that it's a "tourist highway," BUT honestly, this area is magnificent! I had already done the Carlit summit round trip six years ago and this year I preferred just to do the lakes tour at a leisurely pace because I remembered it as being the prettiest part! Carlit is the iconic peak in the area, but it's just rocks :-)
In short, I highly recommend this hike with a picnic at one of the lakes and a refreshing break at the hotel by the lake, and you'll have a great day! And if you want to stay in the area, go to the Petit Canada campsite, which is really exotic and, above all, well located for the shuttle in the morning, because a popular place means it's regulated!
And if you don't like crowds, do the hike at a different time, setting off in the early afternoon. There'll be fewer people on the way back, although obviously you'll need to check the weather forecast and be prepared for warmer temperatures... Anyway, that's what we did...

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Fredtub66
Fredtub66

Overall rating : 5 / 5

Date of your route : Aug 09, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

A beautiful route enjoyed with the family, magnificent weather, a lovely hike, we were blown away.
The only downside was that there were too many people on the trails.
Still, it was a great day.

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Chantal64
Chantal64
• Edited:

Overall rating : 5 / 5

Date of your route : Jul 11, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

We go on this walk every year because it's so beautiful! We tried to do it last May, but it was snowing and we couldn't see the paths at all, so we had to turn back! You need to wear good shoes and be prepared!

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Britanicus100
Britanicus100

Overall rating : 5 / 5

Date of your route : Sep 28, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

This is undoubtedly one of the most beautiful lake hikes in the Pyrenees, which I completed with the ascent of the Pic.
I made a video that shows the unspoilt beauty of these lakes and the key points along the route.
Here it is
https://www.youtube.com/watch?v=w8EkJjQK...

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Guyrandos
Guyrandos

Overall rating : 5 / 5

Date of your route : Jul 22, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Wonderful landscapes, a beautiful hike that completely takes you away from it all. We've done it three times in different years and at different times. It's true that there are a lot of people on the trail, especially at the start towards the first lakes. After that, it thins out a bit. This year, in early July during the week, it was quieter.

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MaguaLuna
MaguaLuna

Overall rating : 5 / 5

Date of your route : Jul 08, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A magnificent hike with no particular difficulties; the description is very accurate and was very useful to us; it's better than relying solely on the signposts; thank you very much

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