4.5
(604)
3,153
riders
251
rides
Mountain bike trails around Chirens offer diverse terrain, from the shores of Lac de Paladru to the ecologically rich Marais de Chirens. The region is characterized by forests, stony paths, and significant elevation changes, providing challenging routes for experienced riders. Views of the Chartreuse Massif are common, enhancing the riding experience. The landscape includes ancient glacial valleys and wetlands, offering varied environments for mountain biking.
Last updated: June 17, 2026
4.4
(5)
26
riders
27.2km
01:42
280m
280m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
3.7
(3)
11
riders
41.6km
03:52
800m
800m
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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4.8
(4)
38
riders
19.3km
01:34
280m
280m
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.
4.0
(2)
11
riders
10.9km
00:53
240m
240m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
4.2
(5)
11
riders
24.6km
01:48
430m
430m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
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Obstructed by branches due to forestry work.
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Lake Paladru is very popular in the summer, especially on weekends. Swimming is possible; there's a small, well-equipped beach.
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This is a classic bike ride around Grenoble, easy and suitable for the whole family.
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In the immediate vicinity of Lake Paladru, you can rent a bicycle for the day, allowing you to enjoy the surrounding area on the road, or on the paths and trails.
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Located at the northern end of Lake Paladru, this wetland is fed by the Courbon stream. It is a true extension of the lake, rich in biodiversity and very pleasant.
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small technical part but for the rest it's 100% fun
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A tourist attraction in this area is Lake Paladru, which stretches from the village of the same name in the north to Charavines in the south. If you walk around the lake from a distance rather than on the paths directly along the shore, the hills offer some very beautiful views of the landscape. But not only that: on the outskirts of Bilieu – on the eastern shore of the lake – we pass a small sacred monument: a simple wayside cross made of two massive wooden beams (without a body or INRI inscription), where the effects of wind and weather are already visible.
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There are over 230 mountain bike trails around Chirens, catering to various skill levels. You'll find a good mix of routes, with 19 easy, 65 moderate, and 154 difficult options.
Mountain biking around Chirens offers diverse terrain, including forests, stony paths, and false flats. Many routes feature significant elevation gains, with some challenging trails having over 1,000 meters of ascent, such as the Tour of Lake Paladru – Chartreuse de la Sylve Bénite loop from Bilieu. You can expect varied landscapes and technical elements on more advanced routes.
While many trails around Chirens are rated as difficult, there are 19 easy routes available. These typically feature less challenging terrain and elevation, making them more suitable for families or beginners. It's always recommended to check the specific route details on komoot for suitability.
Many trails offer scenic views of Lac de Paladru and the Chartreuse Massif. You might also encounter the ecologically rich Marais de Chirens, known for its biodiversity. Other notable points of interest include Our Lady of the Vines and the Croix des Cochettes View of Lac de Paladru.
Yes, Chirens is well-suited for experienced mountain bikers, with 154 routes rated as difficult. Trails like the Tour of Lake Paladru – Chartreuse de la Sylve Bénite loop from Bilieu offer significant elevation gains of over 1,000 meters and cover nearly 40 km, providing a demanding ride through diverse landscapes.
The mountain bike trails around Chirens are highly rated by the komoot community, with an average score of 4.4 stars from over 480 reviews. Riders often praise the scenic views of Lac de Paladru, the varied terrain, and the challenging nature of many routes. The region's natural beauty, including the Marais de Chirens, is also a frequently mentioned highlight.
Yes, many mountain bike trails around Chirens are designed as loops, allowing you to start and finish at the same point. Examples include the Lake Paladru – View of Lake Paladru loop from Villages du Lac de Paladru, which offers scenic views of the lake, and the Scenic Dirt Path Near Voiron – La Créssonière loop from Saint-Blaise-du-Buis.
The region around Chirens is generally pleasant for mountain biking from spring through autumn. During these seasons, you can expect more favorable weather conditions. While winter riding is possible, some trails might be affected by colder temperatures or wet conditions, especially at higher elevations or in shaded forest sections.
While specific cafes directly on trails are not always guaranteed, many routes, especially those around Lac de Paladru, pass through or near villages like Charavines and Villages du Lac de Paladru. These areas typically offer amenities such as cafes and restaurants where you can refuel after your ride.
The length of mountain bike trails around Chirens varies significantly. You can find shorter routes, such as the Lake Paladru – View of Lake Paladru loop from Villages du Lac de Paladru at 22.2 km, to longer and more demanding rides like the Lake Paladru – Dead monk cross loop from Charavines, which covers 32.2 km.
Chirens is located in the Isère department, and while local buses might serve the area, direct public transport access to specific trailheads can be limited. It's advisable to check local bus schedules and routes in advance if you plan to rely on public transport to reach your starting point.
While popular routes around Lac de Paladru can see more traffic, the extensive network of over 230 trails means you can often find quieter options. Exploring some of the less-known routes further from the lake or venturing into the forest sections can lead to a more secluded riding experience.


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