4.6
(32)
2,874
runners
20
runs
Jogging routes around Lac De Caillauas traverse a high-alpine environment in the Hautes-Pyrénées' Louron Valley. The region features towering mountain peaks, deep blue waters, and rugged rocky slopes. While the immediate area presents challenging terrain for experienced trail runners, the broader Louron Valley offers more accessible paths with less elevation gain. This landscape includes gorges and remnants of industrial history, adding varied dimensions to the running experience.
Last updated: July 2, 2026
5.0
(2)
121
runners
14.7km
01:36
200m
200m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
17
runners
8.30km
01:45
630m
630m
Hard run. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

Sign up for free
230
runners
Hard run. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
21
runners
14.5km
03:11
1,230m
1,230m
Hard run. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
16
runners
8.56km
01:06
220m
220m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
Get access to more routes and recommendations from other explorers.
Sign up for free
Already have an account?
Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
Start today with a free account
Your next adventure awaits.
Login or Signup
From here you also have a beautiful view of the Lac d‘Oô
0
0
There is a camping option behind the hut. Hot meals and drinks can be ordered. Dinner and breakfast must be reserved.
1
0
Here the valley opens up to reveal a pretty plain. Continue up the valley to Lake Oô, to enjoy more magnificent views.
1
0
Hike to the stunning Lac d’Oô, a beautiful glacial lake nestled in the Pyrenees. As you approach the lake, you’ll be treated to breathtaking views of its clear, turquoise waters, surrounded by sheer cliffs and lush forest. The hike is moderately challenging, with rocky paths leading to a perfect viewpoint where the lake and surrounding peaks create a truly picturesque scene. Take some time to appreciate the tranquility of the area, where you can also catch a glimpse of the impressive Oô waterfall cascading down the mountainside.
0
0
Superb lake in the heart of the Louron valley with beautiful views of the surrounding mountains. The tour of the lake is a superb walk accessible to all. There are several playgrounds along the path.
0
0
There are over 15 dedicated running routes around Lac De Caillauas, offering a variety of experiences from moderate to difficult. The komoot community has explored these trails over 3000 times.
While many routes directly around Lac De Caillauas are challenging, the broader Louron Valley offers more accessible options. For instance, the Lake Génos-Loudenvielle – Lake Génos loop from Pène des Aubères is a moderate 11.4 km trail that is very accessible and suitable for less strenuous runs, often with mostly paved surfaces and minimal elevation gain.
The region is defined by its dramatic high-alpine environment. You'll encounter towering mountain peaks, deep blue waters like Lac De Caillauas itself, and rocky slopes. The View of the plain – View of the Lac d'Oô waterfall loop from Granges d'Astau route, for example, offers stunning views and features a waterfall. You might also spot industrial vestiges, such as old buildings and rails, remnants from hydroelectric facilities, adding a unique historical dimension.
Yes, many routes, especially those leading directly to and around Lac De Caillauas, are categorized as difficult or very difficult. They often involve significant elevation gain and traverse high mountain landscapes, rocky slopes, and gorges. An example is the Col de la Flamme loop from Germ, which features substantial elevation gain over its 5.9 km.
The area is highly rated by the komoot community, with an average score of 4.6 stars from over 30 reviews. Runners often praise the stunning high-alpine scenery, the challenge of the mountain trails, and the unique blend of natural beauty with historical industrial remnants.
Yes, many of the routes are designed as loops. For instance, the Lake Génos-Loudenvielle – Lake Génos loop from Pène des Aubères provides a moderate circular option, while the Refuge du Portillon loop from Grand Quayrat offers a more difficult circular trail.
While specific regulations for dogs on trails around Lac De Caillauas are not detailed, it's generally advisable to keep dogs on a leash in high-alpine environments, especially due to wildlife and potentially challenging terrain. Always check local signage for any restrictions.
The high-alpine nature of Lac De Caillauas means that summer and early autumn are generally the most favorable times for running, when trails are clear of snow and weather conditions are more stable. Winter running would be significantly more challenging and may require specialized equipment and experience due to snow and ice.
For families or those seeking less strenuous options, the broader Louron Valley, particularly around Lake Génos-Loudenvielle, offers more accessible paths. These are generally under 5 km with minimal elevation, making them suitable for all fitness levels and families.
Parking availability varies by trailhead. For routes starting from areas like Granges d'Astau or near Lake Génos-Loudenvielle, there are typically designated parking areas. It's recommended to check specific route details on komoot for parking information related to your chosen starting point.
Yes, the View of the plain – View of the Lac d'Oô waterfall loop from Granges d'Astau is a difficult 14.6 km route that specifically highlights a waterfall, offering a scenic and rewarding experience for experienced runners.
The region has options for amenities. The Refuge de la Soula serves as a convenient stopover point for hikers and runners in the mountains. In the broader Louron Valley, particularly around Loudenvielle, you can find more options for cafes, restaurants, and accommodation.


Browse the best Running Trails & Routes in other regions.