4.4
(152)
883
riders
79
rides
Mountain biking around Cize, located in the Jura Mountains of France, offers diverse terrain for riders. The region features a landscape of forests, valleys, and plateaus, with varied elevation changes from numerous passes and peaks. Riders can explore routes along rivers and through rolling hills, providing a mix of challenging ascents and descents. This area is characterized by its natural features, including the Ain river and significant viaducts.
Last updated: June 27, 2026
5.0
(4)
19
riders
33.0km
02:59
630m
630m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
5.0
(1)
34
riders
46.0km
04:25
1,010m
1,010m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.

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5.0
(1)
16
riders
26.0km
02:18
510m
510m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
4.5
(2)
9
riders
22.2km
01:27
280m
280m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
5.0
(1)
8
riders
10.8km
01:04
240m
240m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
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An impressive work that has its Wikipedia page https://fr.wikipedia.org/wiki/Viaduc_de_Cize-Bolozon
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This superb wild natural site overlooks the river d’Ain. Lined with spectacular cliffs, it offers remarkable panoramas from its trails and viewpoints.
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Nestled in a spectacular natural setting, the viaduct offers superb viewpoints over the Ain gorges. Built at the beginning of the 20th century and then rebuilt after the Second World War in 1950, it illustrates the railway and road heritage of the territory.
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pretty little stone viaduct with 2 superimposed lanes, one for cars with 6 arches and one for the train with 11 arches. Atypical.
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Beautiful paved road, but for those who prefer dirt tracks, cross to the other side of the river! There won't be any cars and the views are even more beautiful.
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Pretty little viaduct which is a real must-see!
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Magnificent viaduct, nice spot for an outing in Ain.
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Definitely worth a visit, you simply have to include this double-decker bridge in your itinerary.
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Cize offers a wide selection of mountain bike trails, with over 60 routes available for exploration. These trails cater to various skill levels, from easy to difficult.
The mountain bike trails around Cize, nestled in the Jura Mountains, feature diverse terrain including extensive forests, picturesque valleys, and open plateaus. You'll encounter varied elevation changes with numerous passes and peaks, as well as routes along rivers and through rolling hills, providing a mix of challenging ascents and descents.
Yes, Cize offers mountain bike trails suitable for various skill levels. You can find easy routes for beginners, a large number of moderate trails, and challenging difficult routes for experienced riders. For example, the Cize-Bolozon Viaduct – Cize-Bolozon Viaduct loop from Cize is an easy option, while the Seen Ain river dam – Viewpoint overlooking the Ain loop from Simandre-sur-Suran is considered difficult.
The Jura Mountains, where Cize is located, are ideal for outdoor sports like cycling from spring through autumn. While the region is known as a 'Nordic paradise' in winter, offering snow sports, the best time for mountain biking is generally during the warmer months when trails are clear of snow and ice.
Yes, several trails pass by notable landmarks and offer great viewpoints. For instance, the Corveissiat Cave – Cize-Bolozon Viaduct loop from Cize takes you near the impressive Cize-Bolozon Viaduct. You can also find viewpoints like the Jarbonnet Rocks in the area.
Absolutely. The region boasts beautiful natural features. You might encounter the Grotte de Corveissiat or the Cascade de la Pisse Vache, a waterfall, along some routes. The Jura Mountains are known for their unspoilt nature, including forests, lakes, and rivers like the Ain.
Many mountain bike trails in Cize are designed as loops, allowing you to start and finish at the same point. Examples include the Notre Dame des Conches loop from Simandre-sur-Suran and the Cize-Bolozon Viaduct – Cize-Bolozon Viaduct loop from Cize - Bolozon, which offers a challenging ride.
While specific parking details for each trailhead are not provided, Cize and the surrounding villages typically offer public parking areas. It's advisable to check local signage upon arrival or use navigation apps for designated parking spots near trail access points.
Yes, there are easier routes that can be suitable for families, especially those with some mountain biking experience. The region's diverse network includes trails with less elevation gain and smoother terrain. For example, the Cize-Bolozon Viaduct – Cize-Bolozon Viaduct loop from Cize is an easy trail that could be a good starting point for families.
The mountain bike trails in Cize are highly rated by the komoot community, with an average score of 4.3 stars from over 140 reviews. Riders often praise the diverse scenery, which includes forests, river valleys, and plateaus, as well as the varied elevation changes that provide both challenging climbs and exhilarating descents.
The mountain bike trails around Cize vary significantly in length. You can find shorter routes, such as the easy Cize-Bolozon Viaduct – Cize-Bolozon Viaduct loop from Cize at 22.2 km (13.8 miles), to longer, more challenging rides like the Seen Ain river dam – Viewpoint overlooking the Ain loop from Simandre-sur-Suran, which is 38.8 km (24.1 miles) long.
Elevation gain on mountain bike trails in Cize varies widely depending on the route's difficulty and length. For instance, an easy trail like the Cize-Bolozon Viaduct – Cize-Bolozon Viaduct loop from Cize has an elevation gain of around 280 meters (919 feet), while a difficult route such as the Cize-Bolozon Viaduct – Cize-Bolozon Viaduct loop from Cize - Bolozon can involve over 1000 meters (3280 feet) of climbing.


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