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France
Occitania
Bagnères-De-Bigorre

Lac de Caillaouas

The best walks and hikes around Lac de Caillaouas

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.

Best hiking trails around Lac de Caillaouas

  • The most popular hiking route is Soula Refuge – Lac de Caillauas loop from Loudenvielle, a 13.3 miles (21.4 km) difficult trail that takes 8 hours 48 minutes to complete, offering expansive views of the lake and surrounding peaks.
  • Another top favourite among local hikers is Soula Refuge loop from Loudenvielle, a difficult 6.6 miles (10.5 km) path leading to the Refuge de la Soula.
  • Local hikers also love the La Neste du Louron – Soula Refuge loop from Loudenvielle, a 10.3 miles (16.6 km) trail leading through high mountain landscapes, often completed in about 6 hours 58 minutes.
  • Hiking around Lac de Caillaouas is defined by high mountain peaks, alpine lakes, and deep gorges. The extensive trail network offers options for various ability levels, from moderate paths to challenging multi-hour treks.
  • The routes in Lac de Caillaouas are highly rated by the komoot community with an average score of 4.5 stars from over 1200 reviews. More than 15000 hikers have used komoot to explore Lac de Caillaouas's varied terrain.

Last updated: July 4, 2026

4.7

(6)

122

hikers

#1.

Soula Refuge – Lac de Caillauas loop from Loudenvielle

21.3km

08:45

1,270m

1,270m

Hard hike. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

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Hard

4.7

(15)

298

hikers

Hard hike. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

Hard
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4.8

(4)

36

hikers

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate

Moderate hike. Great for any fitness level. Mostly accessible paths. Sure-footedness required.

Moderate

5.0

(4)

79

hikers

Hard hike. Great for any fitness level. Sure-footedness, sturdy shoes and alpine experience required.

Hard
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Popular around Lac de Caillaouas

Road Cycling Routes around Lac de Caillaouas

MTB Trails around Lac de Caillaouas

Cycling around Lac de Caillaouas

Running Trails around Lac de Caillaouas

Mountain Hikes around Lac de Caillaouas

Tips from the Community

Stefan Michaelis
June 21, 2026, Cascade sur le chemin du lac d'Espingo

From here you also have a beautiful view of the Lac d‘Oô

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DennisKe
August 15, 2025, Lac de Caillauas

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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Tzommer
July 23, 2025, Lac d'Oô

Main views of Lac de Oô and its waterfall.

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Mtoy
September 29, 2024, Cabane Jean Forclaz

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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cs 🦦
August 15, 2023, Lac d'Oô

Beautiful turquoise blue reservoir in the middle of the Pyrenees

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2

3

Nice waterfall - cools the head in high temperatures

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Frequently Asked Questions

How many hiking trails are there around Lac de Caillaouas?

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.

What is the best time of year to hike around Lac de Caillaouas?

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.

Are there any easy or family-friendly hiking options near Lac de Caillaouas?

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.

Can I bring my dog on the trails around Lac de Caillaouas?

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.

What kind of natural features can I expect to see while hiking?

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.

Are there any circular hiking routes available?

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.

Are there mountain refuges along the trails for breaks or overnight stays?

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.

Where can I park when hiking to Lac de Caillaouas?

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.

What is the general difficulty level of hikes around Lac de Caillaouas?

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.

What do other hikers enjoy the most about hiking in Lac de Caillaouas?

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.

Are there any waterfalls to see on the trails?

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.

Most popular routes around Lac de Caillaouas

Road Cycling Routes around Lac de Caillaouas

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