4.6
(20)
72
riders
4
rides
Gravel biking around Lac de Bonlieu offers routes through a landscape shaped by glacial activity, featuring a large glacial lake surrounded by dense forests and dramatic cliffs. This region, part of the "Pays des Lacs" in the Jura Mountains, presents a mix of compacted gravel and unpaved sections. The terrain includes rolling tracks and back roads that traverse forests and open valleys, providing varied riding experiences.
Last updated: July 12, 2026
5
riders
77.5km
05:29
1,250m
1,250m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.0
(1)
2
riders
44.1km
03:25
640m
640m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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5.0
(1)
4
riders
74.6km
05:22
1,390m
1,390m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
1
riders
23.7km
01:30
290m
290m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(3)
12
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Lac de Bonlieu
Very nice outing early in the morning
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Cool passage, definitely take a lamp.
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An imposing lake, of a remarkable blue!
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Beautiful viewpoint "Roches de Baume" with views from the plateau into the valley and as far as Baume-les-Messieurs.
5
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Small, rocky stretch of beach that you can climb down to, as well as good views of Lac Le Grand Maclu.
5
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The Bief de la Ruine waterfall is located in the spectacular Malvaux Gorge. One of the most astonishing features of this waterfall is the fact that it only comes alive after heavy rainfall or during snowmelt. When it dries, it gives way to the spectacle of the carved stone, revealing the "Creux des Joyaux," a natural cave where the water swirls with varying degrees of vigor, polishing a multitude of limestone pebbles thanks to the force of its current.
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Don't miss this beautiful view at Roche Bernard
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Currently, there are a few dedicated no-traffic gravel bike trails listed for the Lac de Bonlieu area, offering a range of experiences from moderate to difficult. The region is known for its quiet back roads and forest tracks, perfect for avoiding cars.
While some routes in the area can be challenging, the region around Lac de Bonlieu does offer sections suitable for less experienced riders or families looking for quiet paths. The terrain often features compacted gravel and unpaved sections, making it accessible. For a moderate option, consider the Great view – Gravel Le pont des Janiers loop from Nanchez, which is shorter and has less elevation gain.
The Jura region, including Lac de Bonlieu, offers beautiful scenery throughout the year. Spring brings vibrant colors, summer provides lush greenery, and autumn transforms the landscape with impressive orange and red hues. Each season offers a unique experience, though summer and autumn are generally ideal for comfortable riding conditions on the gravel trails.
Yes, many of the gravel routes in the area are designed as loops, allowing you to start and finish at the same point without retracing your steps. For example, the challenging Chapelle-des-Bois – Chapelle-des-Bois loop from Gare de Saint-Laurent-en-Grandvaux is a significant circular route through the landscape.
The no-traffic gravel trails around Lac de Bonlieu immerse you in the stunning natural beauty of the Jura. You'll encounter dense forests, dramatic cliffs, and panoramic views over the glacial lakes. The region is part of the 'Pays des Lacs,' so expect to see several picturesque lakes. The Hérisson river, which feeds the famous Cascades du Hérisson, originates from Lac de Bonlieu, offering potential detours to impressive waterfalls.
Absolutely. The Lac de Bonlieu area offers challenging routes with significant elevation gains and varied terrain, suitable for experienced gravel bikers. The Chapelle-des-Bois – Chapelle-des-Bois loop from Gare de Saint-Laurent-en-Grandvaux, at over 74 km with substantial climbing, is a prime example of a difficult route. Another challenging option is The ghost tunnel! – Shore of Lac de Narlay loop from La Chaux-des-Crotenay, which offers a unique experience.
The area is highly rated by the komoot community, with an average score of 4.5 stars. Reviewers often praise the tranquil and unspoiled nature, the sense of wilderness, and the diverse terrain that keeps rides engaging. The quiet back roads and forest tracks are particularly appreciated for offering a true escape from traffic.
Yes, various starting points for gravel routes in the Lac de Bonlieu region, especially near charming towns and villages, typically offer designated parking areas. It's advisable to check the specific route details on komoot for recommended parking locations closest to your chosen trailheads.
While the trails themselves are often remote and traffic-free, the broader Jura region is known for its charming, typical towns and villages. You can find authentic gastronomy, cafes, and local shops in these settlements, often located at convenient points along or near the gravel routes. Planning your ride to pass through these villages can offer a pleasant break.
Given the varied terrain and potential for changing weather in the Jura Mountains, it's best to dress in layers. Even in summer, mornings can be cool, and conditions can change quickly. Waterproof and windproof outer layers are recommended, especially if exploring higher elevations or riding in spring/autumn. Always check the local forecast before heading out.
While swimming is generally prohibited in Lac de Bonlieu itself to protect its pristine nature, the broader 'Pays des Lacs' region offers other water activities like kayaking and paddleboarding during summer. You might find designated swimming areas in other nearby lakes. The trails often pass by picnic areas and scenic viewpoints, perfect for a break and enjoying the serene atmosphere.


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