4.3
(185)
1,883
riders
50
rides
No traffic touring cycling routes around Sonthonnax-La-Montagne traverse a diverse landscape characterized by a hilly plateau extending the Monts Berthiand mountain range. The region features varied terrain, from rolling hills to more challenging ascents within the Jura Mountains, with the highest point reaching 786 meters. Cyclists can explore dramatic gorges like Gorges de l'Ain and Gorges de la Valouse, as well as serene lakes such as Lac de Nantua and Lac de l'Oignin. The broader Ain Valley offers expansive views…
Last updated: October 20, 2026
32
riders
38.0km
03:41
810m
810m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
24
riders
34.0km
03:12
580m
580m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

2.0
(1)
23
riders
38.3km
03:35
760m
760m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
8
riders
24.4km
02:10
400m
400m
Hard bike ride. Good fitness required. You may need to push your bike for some segments of this route.
13
riders
26.1km
02:29
420m
420m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Sonthonnax-La-Montagne
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 50 dedicated no-traffic touring cycling routes around Sonthonnax-La-Montagne. These routes offer a variety of experiences, from easy rides to more challenging excursions through the diverse landscapes of the Ain department.
The best time for touring cycling in Sonthonnax-La-Montagne is typically from spring to autumn. During these seasons, the weather is generally mild, and the natural beauty of the Jura Mountains and Ain Valley is at its peak. Summer offers warm conditions, while spring and autumn provide cooler temperatures and vibrant foliage.
Yes, Sonthonnax-La-Montagne offers several easy no-traffic routes suitable for families. One such option is the Le Gros Molard loop from Corveissiat, which is designed to be accessible for a relaxed cycling experience. The region's 'plateau vallonné' provides gentle terrain in many areas.
Yes, many of the no-traffic touring cycling routes in Sonthonnax-La-Montagne are circular, allowing you to start and end your ride in the same location. An example is the Cize Viaduct – Cize-Bolozon Viaduct loop from Cize - Bolozon, which offers a scenic return to your starting point.
The routes often pass by stunning natural features. You can discover the dramatic Cascade de la Pisse Vache, especially impressive after rainfall. Many routes also offer views of the Lake Nantua and the Gorges de l'Ain, providing picturesque waterside and elevated perspectives.
Absolutely. Cyclists can encounter historical landmarks such as the impressive Cize-Bolozon Viaduct, a notable architectural marvel. The Oliferne Castle Ruins and the former Carthusian monastery, Chartreuse de Sélignac, also add cultural depth to your ride.
While specific dog-friendly designations for cycling routes are not always available, many of the quieter, no-traffic paths in Sonthonnax-La-Montagne are suitable for cycling with a well-behaved dog, especially if they are accustomed to a bike trailer or running alongside. Always ensure your dog is leashed where required and that you carry enough water for both of you. The marshland near Napt village offers a unique ecological spot with an observation platform for a brief, educational detour.
The area is highly rated by the komoot community, with an average score of 4.3 stars. Reviewers often praise the region's diverse landscapes, the tranquility of the no-traffic routes, and the stunning natural features like the gorges and lakes. The blend of challenging climbs and scenic, relaxed sections is frequently highlighted.
Public transport options in Sonthonnax-La-Montagne and the surrounding rural areas can be limited. It is advisable to check local bus schedules or regional train services (if available) to nearby towns like Nurieux or Corveissiat, which serve as starting points for routes such as the Public Fountain loop from Nurieux. Driving and parking at the starting points is often the most convenient option.
Parking is generally available in the villages that serve as starting points for these routes, such as Cize - Bolozon, Nurieux, or Corveissiat. Look for designated public parking areas within these communes. For example, when starting the Cize–Bolozon Viaduct loop from Corveissiat, you would typically find parking within Corveissiat village.
While the no-traffic routes prioritize quiet and natural surroundings, the charming villages within the commune—Heyriat, Napt, and Sonthonnax—often have small cafes or restaurants where you can refuel. It's always a good idea to check opening hours in advance, especially in smaller hamlets, or to carry snacks and drinks with you.


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