4.5
(1404)
16,322
hikers
62
hikes
Hiking around Lac de Caillaouas offers a high-alpine environment in the Hautes-Pyrénées, characterized by mountain peaks reaching up to 3,100 meters and deep blue waters. The region features diverse landscapes, including the Gorges de Clarabide, and additional alpine lakes like Lac des Isclots and Lac de Pouchergues. This area provides a range of trails through its high mountain terrain.
Last updated: July 4, 2026
4.7
(6)
122
hikers
21.3km
08:45
1,270m
1,270m
Hard hike. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
4.7
(15)
298
hikers
10.6km
03:46
630m
630m
Hard hike. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

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4.8
(4)
36
hikers
6.26km
02:09
350m
350m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
8
hikers
3.05km
01:25
200m
200m
Moderate hike. Great for any fitness level. Mostly accessible paths. Sure-footedness required.
5.0
(4)
79
hikers
3.90km
01:50
300m
300m
Hard hike. Great for any fitness level. Sure-footedness, sturdy shoes and alpine experience required.
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From here you also have a beautiful view of the Lac d‘Oô
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There's an old ruin of a house by the lake. Below it are camping spots and a small open-air shelter.
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The marmot cabin? Or rather the Jean Forgées cabin which is a private cabin not accessible. Located at the entrance to the suspended valley after a rather demanding climb in the forest. A pretty waterfall accessible a little further.
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A beautiful Hiking to do. Once you arrive at the refuge, take the opportunity to take a snack break, then begin the ascent to the lake. A breathtaking view.
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The valley of La Neste de la Pez exudes intense tranquility!
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Nice waterfall - cools the head in high temperatures
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There are over 60 hiking trails in the Lac de Caillaouas area, catering to various skill levels. You'll find 10 easy routes, 27 moderate paths, and 25 challenging treks, ensuring a suitable option for almost every hiker.
The best time for hiking around Lac de Caillaouas is during the summer months, typically from June to September, when the trails are generally free of snow and the weather is most favorable for high-alpine trekking. Many routes are considered hard and require good fitness and alpine experience, so clear conditions are essential.
While many routes around Lac de Caillaouas are challenging, there are some moderate options available. For a family-friendly experience, consider the View of the Lac d'Oô waterfall – Lac d'Oô loop from Lac d'Oô, a moderate 3 km path that takes about 1 hour 25 minutes. Another moderate option is the Hiking loop from Loudenvielle, which is 6.2 km long and takes around 2 hours 9 minutes.
The Lac de Caillaouas area is part of a protected natural area. While specific regulations for dogs can vary, it's generally advisable to keep dogs on a leash to protect wildlife and ensure a pleasant experience for all hikers. Always check local signage for the most current rules, especially if entering a national park zone.
Hiking around Lac de Caillaouas offers stunning high-alpine scenery. You'll encounter expansive views of mountain peaks up to 3,100 meters, the magnificent deep blue waters of Lac de Caillaouas itself, and dramatic rocky slopes. Many trails traverse the captivating Clarabide Gorges, and you can also discover diverse flora and other alpine lakes like Lac des Isclots and Lac de Pouchergues.
Yes, several popular routes around Lac de Caillaouas are circular. For a challenging full-day trek, the Soula Refuge – Lac de Caillauas loop from Loudenvielle is a difficult 21.4 km trail. A shorter, but still difficult, option is the Soula Refuge loop from Loudenvielle, covering 10.5 km. For a moderate circular walk, consider the Hiking loop from Loudenvielle.
Yes, trails in the region often lead to and past mountain refuges. The Refuge de la Soula is a notable example, serving as a convenient stopover point for lunch or even an overnight stay amidst the mountain scenery. It's always recommended to check the refuge's opening dates and make reservations in advance, especially during peak season.
Many hikes to Lac de Caillaouas begin from the Pont de Prat parking area. Due to its popularity, especially during peak season, it is advisable to arrive early to secure a parking spot.
The hiking trails around Lac de Caillaouas range from moderate to difficult. Many popular routes are considered 'hard' and require good to very good fitness, sure-footedness, sturdy shoes, and some alpine experience. The terrain often involves significant elevation gain and rocky paths.
The area is highly rated by the komoot community, with an average score of 4.5 stars from over 1200 reviews. Hikers often praise the stunning high-alpine environment, the deep blue waters of the lake, and the expansive views of the surrounding mountain peaks. The diverse landscapes, including the Clarabide Gorges, are also frequently highlighted.
Yes, you can encounter waterfalls in the broader region. For example, the View of the Lac d'Oô waterfall – Lac d'Oô loop from Lac d'Oô is a moderate trail that specifically features a waterfall, offering a beautiful natural spectacle.


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