4.2
(181)
866
riders
22
rides
Mountain bike trails Fontenu are situated within France's Jura Mountains, offering a diverse landscape for outdoor activities. The region is characterized by extensive forests, numerous lakes including Lac de Chalain, and varied terrain ranging from gentle slopes to more challenging mountainous sections. This environment provides a mix of technical climbs and exhilarating descents, often with panoramic views.
Last updated: May 9, 2026
4.7
(76)
283
riders
29.5km
02:18
410m
410m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
4.3
(31)
175
riders
12.7km
01:00
130m
130m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

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4.0
(12)
61
riders
38.6km
02:46
570m
570m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
4.3
(24)
118
riders
9.87km
00:45
90m
90m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
4.7
(12)
85
riders
48.6km
03:06
590m
590m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
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A bit of welcome freshness
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An imposing lake, of a remarkable blue!
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This easy-to-access circuit is perfect for exploring a loop that takes in varied and easy paths. However, bring a lamp as there are many tunnels and they are sometimes poorly lit.
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Beautiful view of the lake, and afterward, we had a lovely swim in the lake. Nice bar with delicious ice cream.
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Good shoes recommended; it's a climb
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Correction to my tip: Asphalt with mixed traffic, for residents, but I couldn't see where the residents wanted to go. It's a shame, some sections of the asphalt are no longer in such good condition.
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There are over 25 mountain bike trails around Fontenu, catering to various skill levels. This includes 6 easy routes, 16 moderate routes, and 5 difficult routes, ensuring options for everyone from beginners to experienced riders.
Yes, Fontenu offers several easy mountain bike trails perfect for beginners or those looking for a relaxed ride. An excellent option is the View of Lac de Chalain – View of Lake Chalain loop from Fontenu, an easy 12.1 km route with moderate elevation gain, offering scenic views of Lac de Chalain and passing through quiet forest passages and charming villages.
Mountain biking in Fontenu and the surrounding Jura Mountains features diverse terrain. You'll encounter extensive forests, undulating landscapes, and paths ranging from gentle slopes to more challenging mountainous sections. Many routes offer panoramic views, especially around Lac de Chalain.
Absolutely. Lac de Chalain is a central feature of the region, and many trails offer stunning views. The Chalain Lake Viewpoint – View of Lac de Chalain loop from Doucier is a moderate 29.4 km path providing expansive views of the lake and exploring surrounding forested areas. Another option is the View of Lac de Chalain – View of Lake Chalain loop from Fontenu, which is an easier 12.1 km ride with scenic lake vistas.
The Fontenu area is rich in natural beauty. You can ride past several stunning lakes, including Lac de Chalain, and explore the extensive forests of the Jura Mountains. For dramatic hydrological features, consider routes that pass near the Hérisson waterfalls, the Fan Waterfall, or the Saut Girard Waterfall.
Yes, experienced riders will find challenging options in the Fontenu area. For instance, the View of Lac de Chalain – Chalain Lake Viewpoint loop from Doucier is a difficult 38.6 km trail with significant elevation changes, leading through varied terrain of the Jura Mountains. Another difficult option is the Shore of Lac de Narlay – Grand Maclu Lake loop from Doucier, covering over 41 km with substantial climbing.
The mountain bike trails in Fontenu are highly regarded by the komoot community, with an average rating of 4.3 stars from over 170 reviews. Riders often praise the diverse landscapes, the impressive views of Lac de Chalain, and the variety of routes suitable for different skill levels, from quiet forest passages to more challenging sections.
Yes, many mountain bike routes around Fontenu are designed as loops, allowing you to start and finish in the same location. Examples include the View of Lac de Chalain – View of Lake Chalain loop from Fontenu and the Chalain Lake Viewpoint – View of Lac de Chalain loop from Doucier, both offering scenic circular rides.
Beyond Lac de Chalain, the region boasts several other beautiful lakes that can be incorporated into your rides. You can explore trails near Petit Maclu Lake, Lake Narlay, Lake Ilay, and Grand Maclu Lake, often offering serene views and additional recreational opportunities.
For ambitious riders, the broader Jura Mountains offer the Grande Traversée du Jura (GTJ) mountain biking route. This extensive journey spans 415 km through gentle mountains, forests, and diverse landscapes. It features well-marked paths and


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