4.4
(430)
2,343
riders
137
rides
Mountain bike trails around Le Frasnois are set within the Jura region, characterized by its "4 Lakes" area, including Lac de Narlay and Lac d'Ilay, known for their distinct waters. The landscape features limestone formations, extensive forests, and wetlands, forming part of the Haut Regional Natural Park. Riders can explore routes that traverse these varied terrains, from lake shores to the vicinity of the Hérisson Waterfalls. The region offers a network of trails suitable for different skill levels, incorporating both…
Last updated: May 9, 2026
4.5
(35)
211
riders
35.4km
02:51
520m
520m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
3.0
(4)
13
riders
36.4km
03:05
640m
640m
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
(1)
6
riders
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
5.0
(2)
8
riders
27.2km
02:18
560m
550m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
5.0
(1)
5
riders
42.4km
03:24
750m
750m
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, rocky stretch of beach that you can climb down to, as well as good views of Lac Le Grand Maclu.
5
0
High viewpoint overlooking the gorge and the L'Éventail waterfall.
6
0
High viewpoint overlooking the gorge and waterfall.
1
0
A waterfall with a larger pool and a smaller cascade in a beautiful setting. In front of it is a small stone lynx statue.
6
0
View of the Cascade de L'Eventail. A small, rocky path leads directly to the waterfall.
7
0
Good shoes recommended; it's a climb
0
0
There are over 130 mountain bike trails around Le Frasnois. These routes cater to various skill levels, with 21 easy, 75 moderate, and 40 difficult options, ensuring there's a trail for every rider.
Le Frasnois is renowned for its stunning natural features. Many trails offer views of the '4 Lakes' region, including Lake Narlay, Lake Ilay, and Petit Maclu Lake. You can also ride near the impressive Hérisson Waterfalls, including the spectacular Grand Saut, and explore the surrounding forests and limestone formations.
Yes, Le Frasnois offers a selection of family-friendly mountain bike trails. With 21 easy routes available, you can find options suitable for various ages and skill levels. These trails often feature less challenging terrain and provide opportunities to enjoy the scenic landscapes together.
To immerse yourself in the '4 Lakes' region, consider routes like the Grand Maclu Lake – Shore of Lac de Narlay loop from Le Frasnois. This trail offers an immersive experience along the shores of the area's notable lakes, showcasing their distinctive turquoise and emerald waters.
The Le Frasnois area, particularly within the Haut Regional Natural Park and around the sensitive Natura 2000 wetlands, has specific rules regarding dogs to protect its unique flora and fauna. While many trails are generally accessible, it's always best to keep dogs on a leash and check local signage for any specific restrictions on certain paths or protected areas.
Yes, many mountain bike routes in Le Frasnois are circular, allowing you to start and end at the same point. For example, the Grand Maclu Lake – Shore of Lac de Narlay loop from Bonlieu is a popular circular option that takes you through diverse landscapes.
The mountain bike trails in Le Frasnois are highly rated by the komoot community, with an average score of 4.4 stars from over 400 reviews. Riders often praise the unique lake system, the dramatic Hérisson Waterfalls, and the dense woodlands that define the area's varied terrain.
Absolutely. For breathtaking panoramic views, consider trails that lead towards Pic de l'Aigle. From its summit, you can enjoy expansive vistas encompassing the four lakes, the Ilay gorges, the Jura mountains, and even Mont Blanc on clear days.
The Jura region, including Le Frasnois, is generally best for mountain biking from spring through autumn. During these seasons, the weather is typically mild, and the trails are dry and accessible. Winter can bring snow, making some trails suitable for fat biking or cross-country skiing instead.
Yes, you can find mountain bike trails that explore the area around the Hérisson Waterfalls. A notable option is the Fallen Tree at Lac de Bonlieu – The Hérisson Waterfalls loop from Bonlieu, which allows you to experience the dynamic environment of these impressive cascades.
While Le Frasnois is a rural area, public transport options might be limited directly to all trailheads. It's advisable to check local bus schedules or consider driving to a central point like Le Frasnois village or Bonlieu, where you can often find parking and access various routes.
Generally, you do not need a specific permit for mountain biking on the established trails in Le Frasnois. However, as parts of the area are within the Haut Regional Natural Park and Natura 2000 sites, always respect local regulations, private property, and environmental protection guidelines.


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