4.4
(74)
449
riders
111
rides
Gravel biking around Réserve naturelle de la haute chaîne du Jura offers diverse terrain within one of France's largest national nature reserves. The region features high peaks like Crêt de la Neige and Le Reculet, providing challenging ascents and panoramic views. Riders can explore dense coniferous and deciduous forests, rolling plateaus, and deep river valleys. This landscape, shaped by geological processes, provides an extensive network of paths suitable for gravel biking.
Last updated: July 12, 2026
4.0
(1)
9
riders
38.3km
02:38
700m
700m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
8
riders
55.6km
04:41
1,530m
1,530m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4.5
(2)
5
riders
22.6km
02:00
520m
520m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.0
(1)
4
riders
45.8km
03:36
1,190m
1,190m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.3
(3)
9
riders
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Réserve naturelle de la haute chaîne du Jura
Very nice view from the top. As the street going to the top is mainly in the forest it is possible to do the tour as well by hot weather!
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The Grande source and its streams gush out in a small wood at the foot of Mont-Mussy. They form the main source of La Divonne, a 22 km long river, which flows into Lake Geneva, in Switzerland, at Versoix.
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The greenway connecting Gex to Divonne-les-Bains is an easy and pleasant developed route that crosses the green landscapes between the Jura mountains and Lake Geneva. In Divonne, several routes provide easy access to its lake, as well as the mountain bike trails of Mont Mourex, which are very popular with nature and thrill-seekers.
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A magnificent forest loop. Suitable for all levels, with 200m/20km of really technical sections - easily done on foot.
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Very nice ride. Access routes very nice and safe. The way up to access Mont Mourex parking is a bit technical mainly because of round rocks but easily doable. The Rochassons trail is very nice...a real ride in the park. There is only one section where the trail goes down and is a bit in V shape (maybe because of water during winter). Just take your time and keep focus. Is doable but keep focused. The view from Mont Mourex is great, specially if you are lucky with the weather. Its a very nice 360 view and a nice way down back to the parking.
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Very nice access paths and landscape. There are two sections a bit more technical but doable by average rider like me. First section going up to Mont Mourex (road with some round rocks and a bit muddy when it rains). Second section on the way to the longest loop where the trail is a bit narrow and deep (probably due to rain water going through during winter). In any case, is doable. Just take your time and keep focus :) Definitely a ride to do more times
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Pleasant, rather flat forest section
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There are over 90 dedicated no-traffic gravel bike trails in the Réserve naturelle de la haute chaîne du Jura, offering a wide range of experiences from moderate to difficult. The region's extensive network of paths, including forest trails and dirt roads, provides ample opportunities for peaceful rides.
The Réserve naturelle de la haute chaîne du Jura offers a diverse and engaging terrain for gravel biking. You'll encounter dense coniferous and deciduous forests, rolling plateaus, and deep river valleys. The landscape is characterized by significant elevation changes, with routes often leading to panoramic viewpoints of the surrounding countryside and even the Geneva plain.
The best times for gravel biking in the Réserve naturelle de la haute chaîne du Jura are spring and summer, when wildflowers bloom and temperatures are mild. Autumn is also highly recommended for its vibrant foliage. Winter can be challenging due to snow and ice, especially at higher elevations.
While many routes in the Réserve naturelle de la haute chaîne du Jura involve significant elevation and can be challenging, there are options suitable for families looking for less strenuous rides. Look for trails on the rolling plateaus or lower forest tracks that avoid the steepest ascents. Always check the route's difficulty and elevation profile before heading out with children.
Generally, dogs are permitted on trails within the Réserve naturelle de la haute chaîne du Jura, but they must be kept on a leash to protect wildlife and respect other users. Always check specific signage at trailheads, as regulations can vary in certain sensitive areas within the reserve.
Many no-traffic gravel bike routes offer breathtaking views, including panoramic vistas of the Mont Blanc massif and the Geneva plain. You can also encounter significant natural landmarks such as the summits of Grand Montrond, Crêt de la Neige, and Le Reculet Summit. The region also features interesting karstic formations like limestone pavements and sinkholes.
Yes, cycling, including gravel biking, within the Réserve naturelle nationale de la Haute Chaîne du Jura is subject to regulations. It is permitted only on specific roads and forest tracks that explicitly allow non-motorized vehicles, and on marked itineraries designated by Pays de Gex Agglo. These rules are in place to protect the fragile natural environments and wildlife.
Yes, many of the no-traffic gravel bike routes in the Réserve naturelle de la haute chaîne du Jura are designed as circular loops, allowing you to start and end at the same point. For example, the Combe Blanche – View of Mont Blanc loop from La Goutte offers a rewarding circular experience.
The duration and length of trails vary significantly. You can find shorter rides, like the Les Rochassons route – View of Mont Blanc loop from Contour Du Fleutron, which is around 20 km. Longer, more challenging routes, such as the Climb to Vesancy – View of Mont Blanc loop from Gex, can extend over 50 km and take several hours to complete, depending on your pace and fitness level.
The Réserve naturelle de la haute chaîne du Jura is highly rated by the komoot community, with an average score of 4.3 stars. Reviewers often praise the tranquility of the no-traffic routes, the stunning panoramic views, and the immersive experience of cycling through diverse forests and natural landscapes. The challenging climbs are also frequently mentioned as rewarding.
Parking and trailheads are typically available at key access points around the reserve, often near villages or designated recreational areas. For example, routes like the Panorama of the Alps – Allondon Spring loop from Gex often start from towns like Gex, which provide convenient parking. Always check the specific route details for recommended starting points and parking information.


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