4.4
(180)
933
riders
82
rides
Mountain biking around Nantes-En-Rattier offers diverse terrain on the Matheysin plateau, providing extensive views of the French Alps and surrounding mountain ranges. The region features a mix of stone and ground trails, with significant elevation gains that challenge riders. Picturesque views of Lac de Petichet and various valleys, alongside the dramatic backdrop of peaks like Obiou and Grand Armet, define the landscape.
Last updated: July 1, 2026
5.0
(1)
10
riders
21.1km
03:03
1,100m
1,100m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
4.9
(17)
16
riders
34.5km
03:37
1,060m
1,060m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

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5.0
(1)
10
riders
37.5km
04:34
1,450m
1,450m
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
(1)
12
riders
47.0km
04:06
930m
930m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
13
riders
39.7km
05:15
1,690m
1,690m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
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A route with breathtaking views, which ends on a single track, super nice with the Alpe du Grand Serre bike park. There are still some slightly tricky sections and steep climbs. So for me, electric mountain biking is definitely a necessity. I would classify the route between intermediate and difficult.
0
0
Steep last bends from the pass on a very grassy track, it's for the strong. But the reward: What a 360° panorama at the top!
1
0
A vast, grassy ridge top, with spectacular views of neighboring peaks, valleys and lakes. Despite this peak's slightly lower altitude, at 2,214 meters, you'll still get a great mountain feel as you hurtle down the alpine trails and sharp turns.
1
0
Narrow technical descent over a rocky surface.
0
0
There are over 80 mountain bike trails around Nantes-En-Rattier, offering a wide range of options for all skill levels. The komoot community has explored more than 80 routes in the area.
The trails around Nantes-En-Rattier feature diverse terrain, including stone and ground surfaces. You'll find yourself on the Matheysin plateau, with significant elevation gains and varied mountain landscapes. Some routes may require pushing your bike due to their challenging nature.
Yes, there are several easier options. For a more relaxed ride, consider the View of Lac de Petichet – TO DEFINE loop from Susville. This easy 15.4-mile (24.7 km) route has a moderate elevation gain of around 900 feet (274 meters), making it suitable for those looking for a less strenuous experience.
For experienced riders seeking a challenge, Nantes-En-Rattier offers several difficult routes. The Piquet de Nantes loop from Saint-Honoré is a demanding 24.7-mile (39.7 km) trail through the Massif du Tabor, with an elevation gain of over 5,500 feet (1,687 meters). Another challenging option is the Mountainbike loop from La Mure, a 29.2-mile (46.9 km) difficult route.
The region offers breathtaking natural beauty. You can enjoy panoramic views of the French Alps, the Matheysine lakes, and prominent peaks like Obiou and Grand Armet. Specific viewpoints include The Belvedere of Alpe du Grand Serre and the View of Lake Petichet. The area also features a protected marsh zone and the impressive Vercors cliffs in the distance.
Yes, the region is known for its picturesque lakes. You can find views of Lac de Petichet along some routes, and other notable lakes in the vicinity include Lake Laffrey and Lake Brouffier. These offer scenic spots to pause and enjoy the landscape.
The mountain bike trails in Nantes-En-Rattier are highly rated by the komoot community, with an average score of 4.4 stars from over 180 reviews. Riders often praise the high mountain experience, the extensive views over the Matheysine lakes, and the diverse terrain that caters to various skill levels.
Given the region's high mountain characteristics and potential for significant elevation, the best time for mountain biking is typically from late spring through early autumn. This period generally offers more favorable weather conditions and clear trails, avoiding snow and ice at higher altitudes.
Beyond the natural beauty, you can explore the ruins of Rattier castle, which offers a historical point of interest. The name 'Rattier' itself is Celtic for a fortified hill, hinting at the area's long history.
Yes, many of the trails are designed as loops. For instance, the Boucle de Pique de Nantes is a popular 13.1-mile (21.1 km) circular route offering challenging climbs and descents. Another option is the View of the French Alps – Le Sénépy loop from La Mure, a 21.4-mile (34.5 km) loop with panoramic vistas.
While specific public transport links directly to trailheads might be limited, Nantes-En-Rattier is located in the Isère department, which has regional transport options. It's advisable to check local bus schedules or consider driving to access the various starting points for the mountain bike trails.


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