4.3
(320)
2,212
riders
15
rides
Mountain biking around Saint-Ismier offers diverse landscapes and challenging terrain within the Isère department. The region is characterized by significant elevation changes, proximity to the Chartreuse massif, and a mix of paved and unpaved segments. Riders can expect varied scenery, including garrigues, vineyards, and woods, providing a robust environment for mountain biking enthusiasts.
Last updated: July 1, 2026
3.7
(3)
20
riders
38.9km
04:09
1,460m
1,460m
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)
36
riders
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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5.0
(2)
36
riders
12.4km
01:35
580m
580m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
3.7
(3)
25
riders
21.5km
02:05
680m
680m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
2.0
(1)
5
riders
46.4km
04:20
1,320m
1,320m
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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Exceptional site at the foot of the Dent de Crolle with access via a wild forest road
2
0
Imposing rock that offers numerous routes to climbers of all levels
0
0
Perched at 1,434 meters, the Col du Coq is accessible after a twelve-kilometer climb regardless of the direction of the road taken. It offers a beautiful view of the Dent de Crolles.
0
0
A pass with little crowds (end of April 2024). The road is open despite the signs (no snow removal). The bitumen is correct, average in places (mounted in Gravel). A few very steep slopes with a small flat area which allows you to breathe on the Charteuse side. No infrastructure at the top. Road and bitumen in good condition on the St-Pacrasse side.
2
1
is it really worth the name "must-see"... given that the useful must-see is 5 minutes away (Col de l'Emeindras).... in my opinion, too many must-sees risk making you less You can spot the real must-haves, right? Good walks to all
0
0
Nice cool lake. La Gelinotte restaurant is also worth a stop.
1
1
Nice little descent to learn how to position the front wheel correctly, while being careful on certain sections to ensure that the child does not pick up too much speed or panic (risk of falling on the left of around 3m at certain locations).
0
0
Nice first section, before the sequence of the next three
0
0
Mountain biking around Saint-Ismier offers diverse landscapes and challenging terrain. You'll encounter significant elevation changes, a mix of paved and unpaved segments, and varied scenery including garrigues, vineyards, and woods. The region is also characterized by its proximity to the rugged Chartreuse massif.
The trails around Saint-Ismier primarily cater to experienced riders, with 13 out of 14 routes rated as difficult. There is one moderate route available for those seeking a less strenuous ride. For example, Vtt1 loop from Saint-Ismier is a moderate trail featuring varied terrain.
Yes, Saint-Ismier is an excellent destination for experienced mountain bikers. Most trails are rated as difficult, featuring significant elevation gains and technical sections. Routes like Manival Forest Refuge – Belle descente loop from Saint-Ismier include notable descents, while Arces Tower loop from Saint-Ismier leads through varied, demanding landscapes.
The region around Saint-Ismier is rich in natural beauty and landmarks. You can encounter impressive mountain passes like Col de Porte (1326 m) and Col du Cucheron, or majestic summits such as Chamechaude and Dent de Crolles. There's also Lake Crozet and the historic Fort of Saint-Eynard to explore.
Many trails in the Saint-Ismier area offer stunning panoramic views, especially those that ascend to higher elevations. The region is known for its mountain passes and peaks, such as Chamechaude and Mont Jalla, which provide exceptional vistas of the Chartreuse massif and surrounding valleys. While specific routes aren't highlighted for views, trails like Mont Jalla's ridges loop from Saint-Nazaire-les-Eymes are likely to offer scenic points.
Yes, many mountain bike routes in Saint-Ismier are designed as loops, offering a convenient way to start and end your ride in the same location. Examples include the moderate Vtt1 loop from Saint-Ismier, the difficult Manival Forest Refuge – Belle descente loop from Saint-Ismier, and the Arces Tower loop from Saint-Ismier.
The area is highly rated by the komoot community, with an average score of 4.3 stars from over 280 reviews. Reviewers often praise the diverse landscapes, the challenging terrain, and the significant elevation changes that make for a robust and engaging mountain biking experience.
While most trails in Saint-Ismier are rated as difficult, there is one moderate route available: Vtt1 loop from Saint-Ismier. This 35.4 km trail with 168m of elevation gain might be suitable for families with older, more experienced children. For younger families, it's advisable to check the specific route details carefully.
Generally, dogs are permitted on trails in the Saint-Ismier region, especially in natural areas like the Chartreuse massif. However, it's always best to keep your dog on a leash, especially in areas with wildlife or other trail users, and to check for any specific local regulations or restrictions on individual trails or within protected areas.
The best time for mountain biking in Saint-Ismier is typically from spring through autumn, when the weather is milder and trails are clear of snow. The region's significant elevation changes mean that higher altitude trails might be inaccessible in winter. Always check local weather conditions and trail status before heading out.
Parking availability varies by trailhead. Many routes, especially those starting from Saint-Ismier itself, will have designated parking areas nearby. For routes that begin in smaller villages or more remote locations, street parking might be an option. It's recommended to check the starting point of your chosen route on komoot for specific parking suggestions.
While specific rental shops in Saint-Ismier are not listed, the Grenoble metropolitan area, being a hub for outdoor activities, likely offers several options for mountain bike rentals. It would be advisable to check in Grenoble or larger towns nearby for rental services if you don't have your own bike.
For those looking for longer rides, the Saint-Ismier region offers several options. The Vtt1 loop from Saint-Ismier covers 35.4 km, while the Mont Jalla's ridges loop from Saint-Nazaire-les-Eymes extends to 27.9 km, providing a substantial challenge.


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