4.3
(126)
605
riders
64
rides
Mountain biking around Lac de Sylans offers diverse terrain within the Ain department of France. The region features hilly and mountainous topography, shaped by glacial activity, with varying elevation changes. The landscape includes wooded ridges and valleys, providing a mix of natural environments. The lake itself is known for its pure waters and is surrounded by an "ENS" (espace naturel sensible) protected area.
Last updated: June 27, 2026
5.0
(3)
40
riders
84.6km
07:34
2,020m
2,020m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.
1.5
(2)
8
riders
28.7km
02:51
820m
820m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.

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4.0
(2)
4
riders
36.8km
03:33
920m
920m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
6
riders
15.1km
01:23
280m
280m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
5.0
(1)
10
riders
28.2km
02:45
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.
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The Lac de Nantua is a superb body of water of 141 hectares. In the heart of the Jura, it offers an ideal setting for practicing a multitude of sports. It is even possible to swim in its waters.
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This passage through the woods is a beautiful shady alternative for connecting Lake Genin and Lake Sylans.
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Nestled in pastures at an altitude of 1,000 meters, Giron is the highest (and sunniest!) village in the Ain. Welcoming, with breathtaking views, it is ideal for an overnight stop.
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Located in Saint-Germain-de-Joux, the Marmites de Géant (Giant's Cauldrons) were carved by the Semine river and its tributary the Combet. Gigantic cylindrical hollows, two to three meters deep, are connected by a few successive waterfalls.
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Pretty little lake in the heart of the small Jura mountains
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Beautiful, simple, easy walk; lots of traffic noise on the "road" section, a bit of a shame, but the color of the water is magical
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A 10 km climb from the small roundabout in Châtillon, it's more like 14 km from the Nantua road or the center of Bellegarde. The gradient is fairly steady, ranging from 5.5% to 7.2%, with about ten small steep sections at +8.5%. Very quiet, with very few cars. The road is generally in good condition, but nothing more. There are some beautiful views along the way.
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The Col de Bérentin connects the Valserine Valley to the Retord Plateau, passing through the beautiful Jura forests. Its ascent is gradual and the road is little traveled.
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There are over 60 mountain bike trails available around Lac de Sylans, offering a wide range of options for different skill levels. You'll find everything from easy rides to more challenging routes.
The terrain around Lac de Sylans is characterized by hilly and mountainous topography, with varied elevation changes. You can expect to ride through wooded ridges and valleys, offering a diverse and engaging experience. Some routes may even require pushing your bike in certain sections due to the challenging nature.
The mountain bike trails around Lac de Sylans are highly rated by the komoot community, with an average score of 4.4 stars from over 80 reviews. Many riders appreciate the varied terrain and the natural beauty of the protected 'ENS' area.
Yes, there are 13 easy mountain bike trails around Lac de Sylans, perfect for beginners or families looking for a more relaxed ride. These routes typically have minimal elevation gain and offer a gentle introduction to mountain biking in the region.
Absolutely. Many trails provide stunning views. For example, the View of Lake Nantua loop from Les Neyrolles is an easy path that offers panoramic vistas of Lake Nantua. Another option is the View of Lake Nantua loop from Le Poizat, which also provides great views.
Yes, many mountain bike routes in the area are designed as circular loops. A popular option is the Lake Genin – Lake Genin loop from Charix, which takes you around Lake Genin. Another great loop is the Cuvéry Pass – Plateau de Retord loop from Le Poizat-Lalleyriat.
Yes, the region is rich in both natural beauty and history. While mountain biking, you can explore the unique landscapes shaped by glacial activity. The shores of Lac de Sylans also feature the ruins of 19th-century ice factories, which capitalized on the lake's pure ice. The lake itself is a protected 'ENS' (espace naturel sensible) area.
Yes, you can find trails that include natural features like waterfalls. For instance, the Cascade du Palin – Lake Nantua loop from Le Chateau is a moderate route that passes by the Cascade du Palin, offering a refreshing stop along your ride.
The best time for mountain biking around Lac de Sylans is generally from spring through autumn. During these seasons, the weather is typically more favorable, and the trails are in good condition. While winter mountain biking is possible, conditions can be challenging due to snow and ice, especially at higher elevations.
While specific designated mountain bike parking areas are not explicitly listed, you will generally find parking available in the villages and towns near the trailheads, such as Charix, Les Neyrolles, and Le Poizat. It's always advisable to check local signage for parking regulations.
Many outdoor trails in France, including those around Lac de Sylans, are generally dog-friendly, especially if your dog is well-behaved and kept on a leash. However, it's always recommended to check specific trail regulations or local signage, particularly within protected natural areas like the 'ENS' zone of Lac de Sylans, to ensure dogs are permitted.
Yes, you'll find cafes and restaurants in the nearby villages and towns surrounding Lac de Sylans, such as Le Poizat, Les Neyrolles, and Nantua. These places offer opportunities to refuel and relax before or after your ride.


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