4.4
(165)
1,713
riders
160
rides
Touring cycling around Sonthonnax-La-Montagne is characterized by its varied landscapes, including a rolling plateau that extends the Berthiand mountains. The region overlooks the left bank of the Ain river, featuring dramatic gorges and dense forests. Cyclists can explore routes that traverse charming villages and offer views over the Gorges de l'Ain, with the highest point reaching 786 meters on the Chougeat plateau. The area provides a diverse terrain for touring cyclists, from challenging climbs to routes skirting lakes and rivers.
…Last updated: July 11, 2026
4.9
(15)
130
riders
52.0km
03:22
710m
720m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.0
(3)
25
riders
22.8km
01:28
250m
260m
Hard bike ride. Good fitness required. You may need to push your bike for some segments of this route.

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5.0
(2)
16
riders
66.9km
04:19
870m
870m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
2.0
(1)
19
riders
38.1km
03:35
770m
770m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(2)
12
riders
108km
06:55
1,380m
1,380m
Hard bike ride. Very good fitness required. Mostly paved surfaces. 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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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 small 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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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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A must-see in Ain! It’s a chance to experience some elevation gain!
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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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A must-see on the banks of the Ain
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There are over 160 touring cycling routes in the Sonthonnax-La-Montagne area. These routes offer a diverse range of experiences, from easier rides to challenging climbs, catering to various fitness levels.
The region features varied landscapes, including a rolling plateau that extends the Berthiand mountains, overlooking the left bank of the Ain river. You'll encounter dramatic gorges, dense forests, and circuits that traverse charming villages. Many routes are on paved surfaces, but some challenging climbs like the "Côte de Bolozon" are also present.
While many routes are challenging, there are approximately 17 easier touring cycling routes available in Sonthonnax-La-Montagne. These routes are generally shorter and have less elevation gain, making them suitable for those seeking a more relaxed ride or cycling with family. Look for routes marked as 'easy' on komoot.
The region is rich in natural beauty and historical landmarks. You can cycle past the dramatic Gorges de l'Ain, enjoy views of Lake Nantua, or witness the impressive Cascade de la Pisse Vache, especially after rain. A significant architectural marvel is the Cize-Bolozon Viaduct, a 19th-century double viaduct that carries both railway and road traffic.
Yes, many of the touring cycling routes around Sonthonnax-La-Montagne are circular, allowing you to start and end at the same point. An example is the challenging Cize-Bolozon Viaduct – Cize Viaduct loop from Corveissiat, which covers 52 km and offers views of the historic viaduct.
The best time for touring cycling in Sonthonnax-La-Montagne is generally during the spring, summer, and early autumn months. During these periods, the weather is most favorable, allowing for comfortable rides and the full enjoyment of the region's landscapes, including the Gorges de l'Ain and various lakes.
Absolutely. The region features several beautiful lakes. For extensive views, consider the challenging View of Lac de Vouglans – Along Lake Coiselet loop from Corveissiat, which follows the scenic Lake Coiselet. You can also find routes skirting Lac de l'Oignin and offering views of Lake Nantua.
The touring cycling routes in Sonthonnax-La-Montagne are highly rated by the komoot community, with an average score of 4.4 stars from over 150 reviews. Cyclists often praise the varied terrain, the picturesque villages, and the dramatic natural features like the Gorges de l'Ain.
Yes, many routes are designed to traverse the charming villages that make up Sonthonnax-La-Montagne, such as Heyriat, Napt, and Sonthonnax itself. These villages have preserved their picturesque character, featuring traditional architecture like chapels with stone slab roofs and old washhouses. For a local village experience, you can explore trails around Napt, which also offer views over the Ain river. More information can be found on Haut-Bugey Tourisme.
Yes, there are approximately 51 touring cycling routes classified as moderate difficulty. These routes offer a good balance of challenge and accessibility, often featuring rolling hills and scenic stretches without the extreme elevation gains of the difficult routes. An example is the Cize-Bolozon Viaduct – Cize–Bolozon Viaduct loop from Cize - Bolozon, a 21.7 km ride.
While specific parking areas for cyclists are not detailed for every route, many villages and popular starting points for tours, such as Corveissiat or Cize - Bolozon, typically offer public parking facilities. It's advisable to check local maps or komoot route details for parking suggestions near your chosen starting point.
The Gorges de l'Ain are a prominent natural feature of the region, and many cycling routes offer stunning views of them. The area around Sonthonnax-La-Montagne overlooks the left bank of the Ain river, providing numerous opportunities to experience the dramatic landscapes of the gorges from above. The Cize–Bolozon Viaduct – Cize-Bolozon Viaduct loop from Cize - Bolozon leads through the Ain river valley, offering close-up views.


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