4.4
(287)
1,830
riders
189
rides
Mountain biking around Saint-Julien-De-Raz, now part of La Sure en Chartreuse, offers diverse terrain within the Chartreuse Regional Natural Park in southeastern France. The area features extensive forests, limestone cliffs, and varied topography, including gorges and plateaus. This region provides a network of mountain bike trails suitable for different skill levels, set against a backdrop of natural landscapes.
Last updated: July 1, 2026
4.3
(6)
18
riders
21.6km
01:24
100m
100m
Moderate mountain bike ride. Great for any fitness level. Advanced riding skills necessary.
4.6
(7)
18
riders
32.0km
02:13
450m
450m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.

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4.1
(8)
27
riders
24.0km
02:45
620m
620m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
8
riders
31.6km
02:28
480m
480m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
9
riders
20.9km
01:35
340m
340m
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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Small bridge, unfortunately unpaved cycle path, but beautiful landscape, partial views of the Chartreuse.
2
0
Nice singletrack that avoids the road
0
0
Obstructed by branches due to forestry work.
0
0
small technical part but for the rest it's 100% fun
0
0
Easy along the canal, pretty greenway at the foot of the Chartreuse
0
0
Beautiful trail, but be careful, some sections are treacherous with all those logs and crooked trunks. They've really damaged our forest, thank you, Europe and the ONF (National Forestry Office).
0
0
There are over 170 mountain bike trails around Saint-Julien-De-Raz, offering a wide range of options for different skill levels. This includes 15 easy routes, 35 moderate routes, and 124 difficult routes, ensuring there's something for every mountain biker.
The terrain around Saint-Julien-De-Raz is highly varied, featuring dense forests, dramatic limestone cliffs, and diverse topography including gorges and plateaus. You'll encounter both challenging climbs and scenic dirt paths, with opportunities for cross-country, downhill, and enduro riding within the Chartreuse Regional Natural Park.
Yes, the region is rich in natural beauty. You can expect to see impressive features like the Gorges de Crossey with cliffs up to 200 meters high. Higher elevations such as Roche Brune and the Grand Ratz plateau offer rewarding views of the Chartreuse and Vercors massifs, as well as the Isère valley and Grenoble. Specific highlights include Col de Porte (1326 m) and Col des Mille Martyrs.
The mountain bike trails around Saint-Julien-De-Raz are highly regarded by the komoot community, with an average rating of 4.3 stars from over 270 reviews. More than 1900 mountain bikers have used komoot to explore the varied terrain, often praising the diverse landscapes and the extensive network of trails suitable for all levels.
While many trails are challenging, there are 15 easy mountain bike routes available that are generally more suitable for families or beginners. These routes often traverse less demanding terrain, allowing for a more relaxed experience amidst the natural surroundings of the Chartreuse Regional Natural Park.
The Chartreuse Regional Natural Park generally welcomes dogs, but it's crucial to keep them on a leash, especially in areas with livestock or protected wildlife. Always check specific trail regulations or local signage, as some sensitive areas might have restrictions.
The best times for mountain biking in Saint-Julien-De-Raz are typically spring, summer, and early autumn. During these seasons, the weather is generally favorable, and the trails are clear of snow. Summer offers long daylight hours, but spring and autumn provide cooler temperatures and vibrant foliage.
Yes, parking is generally available at various trailheads and villages throughout the region, including Saint-Julien-De-Raz and nearby towns like Coublevie and Saint-Étienne-de-Crossey. Specific parking information can often be found on individual route descriptions on komoot.
While some larger towns in the Chartreuse Regional Natural Park may have public transport links, direct access to many trailheads around Saint-Julien-De-Raz by public transport can be limited. It's advisable to check local bus schedules or consider driving to reach the starting points of most mountain bike routes.
Yes, many mountain bike routes in the area are designed as circular loops, allowing you to start and finish at the same point. Examples include the Canal de l'Herretang – Pont le l'herretang loop from Coublevie and the Canal de l'Herretang loop from Saint-Julien-de-Ratz, which offer varied distances and difficulties.
As Saint-Julien-De-Raz is situated within the Chartreuse Regional Natural Park, you might encounter a variety of wildlife. The park is known for its biodiversity, including marmots, chamois, and various bird species like eagles. Always maintain a respectful distance and avoid disturbing animals.
While many routes are day trips, the extensive network within the Chartreuse Regional Natural Park allows for longer rides by linking trails. For example, the Côte Manin Pond and La Fure – Scenic Dirt Path Near Voiron loop from Saint-Étienne-de-Crossey is a challenging 29.9-mile route, and many other difficult trails offer significant distances for experienced riders.


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