4.7
(103)
650
riders
38
rides
Gravel biking around Montbonnot-Saint-Martin offers diverse landscapes, characterized by river valleys, mountain passes, and varied terrain. The region is situated between the flat plains of the Isère River and the rising foothills of the Chartreuse and Vercors massifs. This provides a mix of challenging ascents and gentler riverside paths. Both paved and unpaved segments are integrated into the routes, catering to different skill levels.
Last updated: October 6, 2026
4.3
(6)
52
riders
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.8
(4)
24
riders
27.4km
02:09
720m
720m
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.

4.0
(1)
23
riders
32.9km
01:39
70m
70m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
5.0
(5)
19
riders
42.1km
02:00
80m
80m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
4.5
(2)
23
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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It is indeed Chartreuse. There is also a "must-see" that presents "a magnificent view" of Chartreuse when it is actually Belledonne!!
0
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a brand new sector that takes you from Bathoiie to Crolles without a car and along the banks of the Isère
0
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A good single, not too technical.
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0
Very pretty, but it's not the Vercors, it's the Chartreuse, Mont St Eynard to be exact.
0
0
The place is fresh and green. You can take a little snack break there.
0
0
nice climb up to the intersection...then the road going to the fort is cleaner depending on the day (twigs, bread needles...)
0
0
there we are finally almost out of the city
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0
There are nearly 80 gravel bike routes in the Montbonnot-Saint-Martin area. This includes a wide range of options, from easier riverside paths to challenging ascents into the surrounding hills.
Yes, Montbonnot-Saint-Martin offers several easier gravel bike trails. For a relatively flat experience, consider the Gravelroad next to the river loop from Montbonnot-Saint-Martin, which is about 28 km long with minimal elevation gain, making it suitable for a more relaxed ride.
Advanced riders will find plenty of challenging routes with significant elevation. A good option is the Saint-Hilaire-du-Touvet – Saint-Pancrasse loop from Saint-Nazaire-les-Eymes, which covers 38.4 km with over 900 meters of climbing, offering varied terrain and demanding sections.
Many of the gravel bike routes around Montbonnot-Saint-Martin are designed as circular loops, allowing you to start and finish at the same point. Examples include the Clémencières Pass – Vence Pass loop from Mutualité and the Meylan Footbridge – Cycle route along Isere loop from Saint-Nazaire-les-Eymes.
The region offers diverse scenery, from river valleys to mountain passes. You can expect panoramic views from higher elevations. Notable viewpoints and summits in the wider area include Revollat Cross and Izon Cross, which often provide excellent vistas.
Yes, the area is rich in natural beauty and interesting landmarks. You might encounter features like Lake Crozet, or pass by significant peaks such as Dent de Crolles. The historic Fort of Saint-Eynard is also a notable point of interest in the vicinity.
The gravel biking experience in Montbonnot-Saint-Martin is highly rated by the komoot community, with an average score of 4.6 stars from over 170 reviews. Riders often praise the diverse landscape, which combines river valleys with challenging mountain ascents, and the variety of terrain suitable for different skill levels.
Absolutely. The region is characterized by its river valleys, particularly along the Isere. The Meylan Footbridge – Cycle route along Isere loop from Saint-Nazaire-les-Eymes is a prime example, offering a longer ride through these scenic areas with relatively flat sections.
Ride durations vary significantly based on the route's length and difficulty. Easier routes, like the Gravelroad next to the river loop, can take around 2 hours. More challenging and longer routes, such as the Saint-Hilaire-du-Touvet – Saint-Pancrasse loop, can take over 3 hours to complete.
Yes, the Montbonnot-Saint-Martin area features routes that ascend towards mountain passes, offering both a physical challenge and rewarding views. The Clémencières Pass – Vence Pass loop from Mutualité is a popular option that includes scenic pass views and steady climbs.
Gravel biking is generally enjoyable from spring through autumn. Spring brings blooming landscapes, while autumn offers vibrant colors. Summer is also popular, but it's advisable to start early to avoid the midday heat, especially on routes with significant climbs. Winter riding is possible, but conditions can be variable, with snow and ice at higher elevations.
While the main routes are well-loved, exploring some of the less-trafficked paths can reveal quieter experiences. Consider routes that venture slightly off the most popular loops, such as the Green track du billard – Isère Bend Near Grenoble loop from Saint-Ismier, which offers a pleasant ride through varied terrain away from the busiest spots.


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