4.4
(36)
205
riders
38
rides
Gravel biking around Thoiria offers routes through a landscape characterized by significant water features, including Lac de Clairvaux-les-Lacs and Lake Vouglans, alongside the Ain river. The terrain features notable elevation changes, with routes often incorporating climbs and descents around these bodies of water. This region provides a challenging environment for gravel cyclists, with many routes traversing varied surfaces and offering expansive views of the lakes and surrounding hills.
Last updated: July 3, 2026
3.8
(4)
44
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.8
(8)
32
riders
45km
02:51
760m
760m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4.0
(5)
31
riders
29.1km
02:04
440m
440m
Hard gravel ride. Good fitness required. You may need to push your bike for some segments of this route.
15
riders
39.9km
02:42
710m
710m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.5
(4)
17
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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The Saut de la Saisse is a waterfall in France located in the Jura massif, at the point where the Ain river flows into the Vouglans reservoir at Pont-de-Poitte and Patornay, between Lons-le-Saunier and Clairvaux-les-Lacs. A "marmite du diable", "marmite de géant" or "marmite glaciaire" in Switzerland (or simply "marmite" or "chaudron") is a more or less cylindrical natural cavity carved into the rock by ancient, generally torrential watercourses, carrying pebbles or gravel, which promotes swirling erosion (a phenomenon called "marmitage").
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Climbed it today (17-8-25); it's open, and there are signs along the road showing your progress. Traffic is quiet, and a beautiful green climb, especially further on.
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a magnificent view of the lake
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Classified as 3rd category, the Col de la Joux was crossed during the 8th stage of the 2017 Tour De France!
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Thoiria offers a robust selection of over 35 gravel bike trails. These routes primarily cater to moderate to difficult skill levels, providing a challenging experience for cyclists.
The gravel biking routes around Thoiria are generally considered moderate to difficult due to significant elevation changes and varied terrain. There are currently no routes specifically categorized as easy, so beginners should be prepared for a challenge or consider shorter sections of the existing trails.
For those seeking a longer and more challenging ride, the Vouglans Dam – View of Lake Vouglans loop from Pont-de-Poitte stands out. This difficult 41.3-mile (66.5 km) trail features over 3,300 feet (1,000 meters) of elevation gain, leading through varied terrain around Vouglans Dam and Lake Vouglans.
Given the region's characteristic elevation changes and the moderate to difficult grading of most gravel routes, truly family-friendly options suitable for young children might be limited. However, families with older, experienced riders could consider shorter segments of trails or explore the flatter sections closer to the lakes for a less strenuous experience.
The routes around Thoiria are defined by stunning natural beauty, primarily featuring significant water bodies like Lac de Clairvaux-les-Lacs and Lake Vouglans, as well as the Ain river. You'll encounter expansive lake views, forested sections, and panoramic vistas from various viewpoints. For example, the Stunning view of the lake – View of Lake Vouglans loop from Boissia offers exceptional scenic viewpoints overlooking Lake Vouglans.
Yes, many of the gravel bike routes in Thoiria are designed as loops, allowing you to start and finish at the same point. A popular example is the Lac de Clairvaux-les-Lacs – Pyle Bridge loop from Clairvaux-les-Lacs, which circles Lac de Clairvaux-les-Lacs and crosses the notable Pyle Bridge.
The region is rich in natural attractions. Along your rides, you might encounter viewpoints like La Fratte Viewpoint, the unique Quinquenouille Waterfall, or the fascinating Giant's Kettles. The Pyle Bridge is also a notable feature often included in lake loops.
While gravel biking is possible year-round, the best seasons are typically spring, summer, and autumn. These months offer more predictable weather, warmer temperatures, and full access to trails. Spring brings lush greenery, while autumn showcases vibrant foliage around the lakes.
Winter conditions in Thoiria can be challenging for gravel biking. The region may experience cold temperatures, ice, and snow, especially at higher elevations or on less exposed trails. Some routes might become impassable or require specialized equipment. It's advisable to check local weather forecasts and trail conditions before heading out in winter.
The komoot community highly rates the gravel biking in Thoiria, with an average score of 4.2 stars from over 25 reviews. Riders frequently praise the challenging terrain, the stunning views of Lac de Clairvaux-les-Lacs and Lake Vouglans, and the sense of adventure offered by the varied surfaces and elevation changes.
Yes, some routes incorporate views of the Ain river. For instance, the View of the Ain at Pont-de-Poitte – Pyle Bridge loop from Maisod provides scenic perspectives of the river as it winds through the landscape, alongside other water features like the lakes.
While popular routes like those around Lac de Clairvaux-les-Lacs can see more traffic, exploring trails further from the main lake access points or opting for rides during off-peak hours (early mornings, weekdays) can lead to a more secluded experience. The region's extensive network means you can often find quieter paths by venturing slightly off the most well-known loops.


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