4.6
(118)
2,969
riders
58
rides
Mountain bike trails around Lac d'Arrius offer challenging routes through the high-altitude Pyrénées-Atlantiques region. The terrain is characterized by rugged mountain landscapes, featuring craggy rocks and significant elevation changes. Riders can expect demanding climbs and descents, often traversing unpaved segments. The area provides panoramic views of Pyrenean peaks and diverse ecosystems, from forests to open, rocky passes.
Last updated: June 20, 2026
4.9
(8)
142
riders
38.1km
04:49
1,600m
1,600m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.
4.0
(1)
45
riders
32.6km
03:54
1,420m
1,420m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.

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3.5
(2)
191
riders
40.8km
04:08
1,270m
1,270m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.
5.0
(6)
185
riders
24.3km
02:25
820m
820m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
4.3
(3)
156
riders
54.0km
05:00
1,360m
1,360m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.
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A well-preserved old lime kiln
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Spectacular landscapes, 360º views everywhere you look is worth it.
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Great walk accessible to everyone, magnificent panorama
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Beautiful church that is located in the town of Guasach and that forms one of the towns close to the capital, Vielha. From the road that takes us straight to the church itself, you can see impressive views of the valley and the city of Vielha as a whole.
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If you like mountain biking and narrow trails, you will love this route through the Garonne. It is a path with spectacular views of the riverbed and very easy to navigate.
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There are nearly 60 mountain bike trails around Lac d'Arrius, offering a wide range of options for different skill levels. The komoot community has rated these routes highly, with an average score of 4.6 stars.
The terrain around Lac d'Arrius is characterized by rugged mountain landscapes with significant elevation changes. You'll encounter craggy rocks, unpaved segments, and demanding climbs and descents. The region offers panoramic views of the Pyrenean peaks and diverse ecosystems, from forests to open, rocky passes.
While many routes in the Lac d'Arrius area are challenging, there are 6 easy mountain bike trails available. These routes provide a gentler introduction to mountain biking in the Pyrenees, allowing riders to enjoy the scenery without extreme technical demands.
For experienced riders seeking a challenge, the area offers 35 difficult routes. One popular option is the Vielha - Pista Salient - Bords - Mont - Vilac - Vielha — Centro BTT del Valle de Arán, a 38.1 km trail with significant elevation gain. Another demanding route is the Pomaròla Trail, which spans 32.6 km and offers a comprehensive mountain biking experience with challenging ascents and exhilarating descents.
Yes, several loop trails are available. For instance, the Trail along the Garona River – Aiguamòg Reservoir loop from Vielha is a 40.8 km difficult route that takes you through diverse environments. Another option is the Bassa d'Oles – Bassa d'Oles loop from Vielha, a 23.9 km difficult trail.
The region is renowned for its stunning glacial lakes, including Lac d'Arrius itself, Lac Tort d'Arrius, and Lac del Mar. These lakes are noted for their unique, untouched colors and provide a picturesque backdrop. You'll also enjoy views of rugged Pyrenean peaks like Tuca Palomera and Tuca de Rius.
The Pyrenees, including the Lac d'Arrius area, are generally best for mountain biking during the warmer months when trails are clear of snow and weather conditions are more stable. Always check local weather forecasts and trail conditions before heading out, especially at higher altitudes.
Many routes in the region offer views of or pass by the numerous glacial lakes. While specific routes might not be explicitly named for passing multiple lakes, the general landscape ensures you'll be surrounded by these serene, high-altitude bodies of water, such as Lac d'Arrius and Lac Tort d'Arrius.
The komoot community highly rates the mountain biking experience in Lac d'Arrius, with an average score of 4.6 stars from over 100 reviews. Riders often praise the challenging nature of the routes, the stunning high-altitude lakes, and the panoramic views of the Pyrenean peaks.
Yes, for endurance riders, there are several long routes. The Bossòst – Arres Pond loop from Vielha is a difficult 54 km trail, offering a substantial ride through the varied Pyrenean landscape.
Despite offering diverse activities, the landscape around Lac d'Arrius maintains a profound sense of tranquility and quiet. Many trails lead through areas characterized by 'craggy, grey, endless rocks,' providing an escape into nature where you can often find solitude.


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