4.4
(50)
1,020
riders
21
rides
Mountain biking around Lac de Grand'Maison offers diverse terrain within a dramatic alpine setting. The region, situated at an elevation of 1698 meters, features high-altitude environments and panoramic views of the French Alps. This area is characterized by its impressive artificial lake, the Grand'Maison Dam, and surrounding mountain ranges, providing a variety of routes for mountain bikers. The terrain includes challenging ascents and descents, with options ranging from technical single tracks to more accessible paths.
Last updated: July 1, 2026
5.0
(1)
35
riders
19.5km
02:21
990m
990m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.
8
riders
18.6km
01:58
710m
710m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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5.0
(1)
32
riders
43.6km
06:00
2,340m
2,350m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
5.0
(5)
43
riders
18.5km
02:02
670m
670m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
13
riders
12.9km
01:47
720m
730m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
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A great monument at the Tour de France.
2
0
A busy hiking trail in summer. All those lakes and vistas are beautiful.
0
0
A busy hiking trail in summer. All those lakes and vistas are beautiful.
0
0
Just want a drink? You're not allowed to sit on the terrace. (Summer peak season)
0
0
Stage to take a photo when you get to the top.
11
0
Photo booth at the finish line at Alpe d'Huez.
12
0
A trail that avoids the road from Vaujany and descends to Lac du Verney. The trail is S2 with S3 sections. It's very narrow, with a ravine on the left, and roots sometimes appear.
0
0
Beautiful glacial lake on a plateau above the Alpe d'Huez ski resort,
0
0
There are 19 mountain bike trails around Lac de Grand'Maison, offering a diverse range of experiences. These include 1 easy, 10 moderate, and 8 difficult routes, catering to various skill levels.
The terrain around Lac de Grand'Maison is characterized by its dramatic alpine setting and high-altitude environment. You'll find a mix of challenging ascents and descents, technical single tracks, and more accessible paths, all set against panoramic views of the French Alps. The area is known for its impressive artificial lake and surrounding mountain ranges.
Yes, there are 10 moderate mountain bike routes. For example, the L'Ouillon – Speed Wheel loop from Saint-Sorlin-d'Arves is a 14.0 km trail through alpine meadows and forests. Another good option is the Allemont Water Sports Center – L'Enversin-d'Oz loop from Vaujany, which covers 20.4 km with around 619 meters of elevation gain.
For experienced riders, there are 8 difficult routes. The L'Ouillon – Saint-Jean-de-Maurienne loop from Col du Glandon is a demanding 64.8 km trail with over 1900 meters of elevation gain. Another challenging option is the La Vilette – La Fare Waterfall loop from Vaujany, a 19.5 km path featuring significant climbs and descents with views of local waterfalls.
Many of the routes around Lac de Grand'Maison are designed as loops. Examples include the L'Ouillon – Speed Wheel loop from Saint-Sorlin-d'Arves and the Allemont Water Sports Center – L'Enversin-d'Oz loop from Vaujany, both offering circular journeys through the alpine landscape.
Given its high-altitude location at 1698 meters in the French Alps, the best time for mountain biking is typically during the warmer months, from late spring to early autumn. This avoids snow cover and ensures trails are clear, allowing for optimal enjoyment of the alpine environment.
The mountain bike routes in Lac de Grand'Maison are highly rated by the komoot community, with an average score of 4.4 stars from over 40 reviews. Over 900 mountain bikers have used komoot to explore the varied terrain, often praising the dramatic mountain ranges and the diverse options for different ability levels.
Yes, the region offers consistent panoramic views of the French Alps. The routes often pass by the impressive artificial Lac de Grand'Maison and its dam. Some trails, like the La Vilette – La Fare Waterfall loop from Vaujany, offer views of local waterfalls and valleys. The high-altitude environment itself provides a sense of vast open spaces and pristine nature.
While specific parking areas for each trail are not detailed, the region is a hub for outdoor activities. Areas like Vaujany, which serves as a starting point for several routes, typically offer parking facilities for visitors accessing the trails and other attractions.
The elevation gain varies significantly depending on the trail's difficulty. Difficult routes, such as the L'Ouillon – Saint-Jean-de-Maurienne loop from Col du Glandon, can feature over 1900 meters of ascent. Moderate trails like the Allemont Water Sports Center – L'Enversin-d'Oz loop from Vaujany typically have around 600 meters of elevation gain, offering a good workout without extreme climbs.
The Lac de Grand'Maison and its impressive dam are central features of the region. While specific routes directly on the dam are not listed, many trails in the surrounding area offer views of this significant engineering feat and the artificial lake it created. The dam itself is an interesting landmark to observe during your ride.


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