4.4
(217)
1,329
riders
81
rides
Mountain biking around Lac Mort, situated on the Matheysin Plateau in Isère, France, offers diverse terrain for riders. The region features a glacial lake set against a backdrop of hills and mountains, including the Taillefer massif. Dense forests of beech, fir, and ash trees border the lake's eastern bank, providing varied riding environments. The Matheysin plateau, peaking at over 900 meters, contributes to the region's elevated landscapes, offering challenging climbs and descents with panoramic views.
Last updated: July 1, 2026
4.2
(5)
15
riders
26.9km
02:18
460m
460m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
5.0
(1)
7
riders
22.9km
02:33
810m
810m
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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4
riders
16.3km
01:22
140m
140m
Hard mountain bike ride. Great for any fitness level. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
4
riders
12.0km
00:55
260m
260m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
4.8
(17)
92
riders
35.6km
04:07
1,070m
1,070m
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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The little road that goes down from Cholonge is great and on arrival you have a superb view of Lake Lafrey
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Very beautiful panorama once you arrive at the Pierre Percée!
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I did it on gravel, climbing via the Aveillans hill (west), it was fine. Direct descent to Putteville, very limited at the beginning on gravel, much steeper but it was fine.
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1st part very smooth and very pleasant, 2nd part much more technical with a nice climb on a very greasy muddy path, steep slopes and quite technical descents. The final does not take the greenway recently set up and which allows you to avoid the road.
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beautiful course, technical, D+ beautiful singles
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MTB route 10 takes you to the Beauregard viewpoint at an altitude of 1632m. It's a tough climb. You have 360 degrees there on Grenoble and the Grand Serre
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Along this path, you alternate between wooded corridors and open balconies. Here, precisely, you can admire the turquoise waters of Lake Petichet. A real call to swim. If you go back down, the lake is not that far.
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There are over 80 mountain bike trails around Lac Mort, catering to various skill levels. The majority of these, about 67 routes, are considered difficult, while there are also 15 moderate and 6 easy options available.
The terrain around Lac Mort is diverse, featuring a mix of glacial lake shores, dense forests of beech, fir, and ash trees, and the elevated landscapes of the Matheysin plateau. You'll find varied riding environments, from serene, forested areas to open landscapes with panoramic views of the surrounding alpine scenery, including the Taillefer massif and Obiou mountain.
Yes, there are 6 easy mountain bike routes around Lac Mort. One example is the Lake Laffrey – magnificent view !!! loop from Cholonge, which is 12.8 km long and offers beautiful scenery.
The mountain bike trails around Lac Mort are highly rated by the komoot community, with an average score of 4.3 stars from over 230 reviews. Riders often praise the varied terrain, the stunning views of the glacial lakes and mountains, and the immersive experience within the dense forests and elevated plateaus.
Yes, many routes around Lac Mort are designed as loops. For example, the TO DEFINE – Nice Place Bänkle with a view loop from Laffrey is a difficult 26.1 km loop offering panoramic views, and the Bucolic landscape – View of Lac de Petichet loop from Cholonge is another challenging 28 km option.
The region around Lac Mort, situated on the Matheysin Plateau, is generally best for mountain biking during the warmer months when trails are clear of snow and ice. Spring through autumn offers pleasant conditions to explore the diverse landscapes, from forests to elevated plateaus. Always check local weather conditions before heading out.
While the guide does not specify dog-friendly routes, the natural environment of the Matheysin Plateau, with its forests and open landscapes, often allows for dogs on trails. However, it's always recommended to check local regulations and signage for specific trails, especially concerning protected areas or private land, and to keep dogs on a leash for their safety and to respect wildlife.
Absolutely. The Lac Mort area is known for its picturesque alpine setting. You can expect stunning views of the glacial lakes, the Taillefer massif, and the Obiou mountain from various points on the Matheysin plateau. The dense forests of beech, fir, and ash trees also provide beautiful natural scenery along the routes.
The Lac Mort area is located on the Matheysin Plateau, approximately 25 km southeast of Grenoble. While specific public transport links directly to trailheads are not detailed, major towns like Laffrey serve as common starting points. It's advisable to check regional bus services or consider carpooling for direct access to the more remote trail starts.
The region around Lac Mort, particularly near towns like Laffrey, offers amenities such as cafes and accommodation. While the immediate vicinity of the lake is preserved, the broader Matheysine area caters to outdoor enthusiasts. For specific options, it's best to consult local tourism resources like Matheysine Tourisme.
The Lac Mort region offers a wide range of difficulty levels for mountain biking. While there are 6 easy and 15 moderate routes, the majority of the 88 available trails, specifically 67, are classified as difficult. This means the area is particularly well-suited for experienced riders seeking challenging ascents and technical descents.


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