4.6
(20)
72
riders
14
rides
Gravel biking around Lac de Bonlieu offers diverse terrain within the Jura Mountains, characterized by glacial lakes, extensive forests, and varied landscapes. The region features a network of trails suitable for gravel bikes, including forest paths, dirt tracks, and some paved sections. Riders can explore deep valleys, ascend dirt tracks to scenic summits, and navigate high plateaus. This area provides a range of routes, from easy paths to more challenging trails with significant elevation gains.
Last updated: July 2, 2026
5
riders
66.3km
04:35
1,120m
1,120m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.3
(7)
14
riders
12.1km
00:39
120m
120m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

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5.0
(2)
21
riders
22.6km
01:31
330m
330m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.2
(6)
7
riders
10.6km
00:35
100m
100m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
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.
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Cool passage, definitely take a lamp.
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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.
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Boat mooring with wooden dock for fishing boats at Lac de Narlay.
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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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Lacs de Maclu are two adjacent lakes in the western part of the French Jura, in the Jura department of Franche-Comté. They are located at an elevation of 779 m in a depression in the High Jura, in the region of the Five Lakes near Le Frasnois, about 12 km south of Champagnole. The Petit Maclu, located to the northeast, has an area of 5 hectares, a length of about 500 m, and a maximum width of about 120 m. Its greatest depth is 11 m. It lies entirely within the municipal territory of Le Frasnois.
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Don't miss this beautiful view at Roche Bernard
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waterfalls don't always flow
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The Lac de Bonlieu area offers a wide selection of gravel bike trails, with over 15 routes to explore. These routes cater to various skill levels, from easy loops to more challenging climbs.
You can expect diverse terrain, characteristic of the Jura Mountains. Trails often feature forest paths, dirt tracks, and some paved sections. Riders will navigate between pristine glacial lakes, deep valleys, and ascend dirt tracks leading to scenic summits and high plateaus.
Yes, there are easy routes perfect for beginners or families. For instance, the Grand Maclu Lake – Shore of Lac de Narlay loop from Le Frasnois is an easy 6.6-mile (10.6 km) trail that leads through forested areas and around the lakes, often completed in about 44 minutes.
For those seeking a greater challenge, the region offers several difficult routes. The Shore of Lac de Narlay – View of Lac de Narlay loop from La Chaux-du-Dombief is a difficult 24.1-mile (38.8 km) path providing expansive views and varied terrain with significant elevation gain.
While the Cascades du Hérisson themselves are best explored on foot, their proximity to Lac de Bonlieu means you can combine gravel biking with a hike to these spectacular waterfalls. Many gravel routes in the area will bring you close to the starting points for the waterfall trails, allowing for a varied outdoor experience.
Yes, many of the gravel bike routes around Lac de Bonlieu are circular, allowing you to start and end at the same point. A popular moderate option is the Shore of Lac de Narlay – Grand Maclu Lake loop from La Chaux-du-Dombief, which circles two picturesque lakes.
The best time for gravel biking around Lac de Bonlieu is generally from spring through autumn. During these seasons, the weather is more favorable, and the trails are typically clear. Winter conditions can bring snow and ice, making some routes challenging or impassable.
Absolutely. The Jura region is known for its breathtaking panoramic views. Many routes ascend dirt tracks to scenic summits or high plateaus, offering stunning vistas of the lakes, valleys, and forests. For example, the Beautiful view of the Grand Lac – SCIE Viewpoint loop from Hautecour specifically highlights a scenic viewpoint.
The gravel bike trails around Lac de Bonlieu are highly regarded by the komoot community, with an average rating of 4.7 stars from over 10 reviews. Riders often praise the diverse terrain, the tranquil ambiance, and the stunning natural beauty of the glacial lakes and forests.
Yes, there are generally parking options available in the villages surrounding Lac de Bonlieu, such as La Chaux-du-Dombief and Le Frasnois, which serve as common starting points for many routes. It's advisable to check specific starting points for designated parking areas.
While public transport options directly to Lac de Bonlieu might be limited, the broader Jura region has some connections. It's recommended to research local bus services or train connections to nearby towns like Saint-Laurent-en-Grandvaux and then plan your route or a short transfer from there.
Yes, you'll find charming villages around Lac de Bonlieu and in the wider Jura region that offer cafes and restaurants. These are great spots to refuel and enjoy local cuisine during or after your ride. Specific establishments can be found in towns like La Chaux-du-Dombief or Le Frasnois.


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