4.4
(139)
953
riders
138
rides
Mountain biking around Cize-Bolozon offers diverse terrain within the Ain department of France. The region features dramatic landscapes, including the Ain gorge, limestone cliffs, and wooded hills, providing a scenic and challenging environment for cyclists. Trails often involve significant elevation gains and unpaved segments, requiring good fitness levels. The area's natural features, such as the Cize-Bolozon Viaduct and various viewpoints, enhance the riding experience.
Last updated: May 15, 2026
4.7
(3)
19
riders
45.8km
02:49
490m
490m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
7
riders
32.1km
02:09
530m
530m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Sign up for free
4.0
(3)
4
riders
35.8km
03:27
940m
940m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.
5.0
(1)
2
riders
28.9km
02:13
540m
540m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
3
riders
14.4km
01:24
360m
360m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
Get access to more routes and recommendations from other explorers.
Sign up for free
Already have an account?
Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
Start today with a free account
Your next adventure awaits.
Login or Signup
The bridge separates two departments, the Jura and the Ain. "Iron bridge. For several centuries, the Ain was crossed at Thoirette by means of a ferry, known as the bac de Christouphe, the name of the commune where the passenger resided. From 1808 to 1811, the riparian communes clubbed together to build a bridge in place of this ferry. The project had been drawn up by Mr. Cordier, of Orgelet, an engineer then in charge of the direction of the Simplon road works. Various obstacles opposed the execution of this work. It was only in 1829 that an iron bridge was built, which collapsed in 1843. The department of Ain has just replaced it with an iron bridge currently open to traffic". Statistique de la France - 1855 - Ministère de l'Agriculture par Imprimerie Impériale à Paris - p53.
0
0
There are a few shops right next to the bridge over the Ain and also in the town itself.
0
0
An active water cave that is locked. Only the cavers have access here.
7
0
A café in the small village of Thierette. It is a very beautiful place next to the Ain river. It's just over the river and a nice place to take a break.
2
0
A quiet road that runs along the shore of Lac de Coiselet. It is on the border between the departments of Ain and Jura.
3
0
View of the castle from the Single des Crêtes
0
0
There are nearly 140 mountain bike trails around Cize-Bolozon, offering a wide range of options for different skill levels. The komoot community has rated these routes highly, with an average score of 4.4 stars.
Mountain biking in Cize-Bolozon features diverse and dramatic landscapes. You'll encounter the impressive Ain gorge, limestone cliffs, and extensive wooded hills. Many trails include significant elevation gains and unpaved segments, providing a challenging and scenic experience.
While many trails in Cize-Bolozon involve significant elevation and unpaved sections, there are 12 easy routes that might be more suitable for families or those looking for a less strenuous ride. It's always recommended to check the specific route details for suitability.
The region is rich in natural beauty and unique landmarks. You'll likely encounter the dramatic Ain gorge with its turquoise waters and impressive rock formations. The iconic Cize-Bolozon Viaduct, a double-deck stone bridge spanning the Ain River valley, is a prominent feature on many routes, offering stunning views. You can also expect wooded hills, plateaus, and various viewpoints like the Jarbonnet lookout.
Yes, many mountain bike routes in the area are designed as loops. For example, you could try the moderate Along Lake Coiselet loop from Matafelon-Granges, which offers scenic views along the lake's edge, or the more challenging Singletrail – Corveissiat Cave loop from Corveissiat, which leads through varied terrain.
The region's diverse terrain can be enjoyed across different seasons. Spring and autumn generally offer pleasant temperatures and vibrant scenery. Summer can be warm, but the wooded sections provide shade. Winter conditions might include colder temperatures and potentially challenging surfaces, so checking local weather and trail conditions is advisable.
Yes, you can find routes that include waterfalls. For instance, the moderate The Oignin Falls – Moos Trail loop from Coisia is a shorter route that takes you past the Oignin Falls, offering a refreshing natural highlight.
The trails around Cize-Bolozon cater to various skill levels. There are 12 easy routes, 97 moderate routes, and 28 difficult routes. Many trails involve significant elevation gains and unpaved segments, requiring good fitness, especially for the more challenging options.
The area is highly rated by the komoot community, with an average score of 4.4 stars from over 160 reviews. Mountain bikers often praise the diverse terrain, the scenic views of the Ain gorge and viaduct, and the variety of routes available for different abilities.
While specific cafe or restaurant stops are not always explicitly detailed in route descriptions, many trails pass through or near villages where you can find amenities. The Restaurant le Pont – L'Oignin loop from Thoirette is an example of a route that starts near a restaurant, suggesting opportunities for refreshment.
Yes, there are several longer routes for those seeking a more extensive ride. The Lac de Coiselet – Corveissiat Cave loop from Thoirette is a moderate 28.5-mile (45.8 km) trail that explores the area around Lake Coiselet, offering a substantial ride.


Browse the best MTB trails in other regions.