4.2
(17)
314
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49
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No traffic touring cycling routes around Marnans are situated within the Isère department of southeastern France, offering diverse landscapes for cyclists. The commune rests on the Chambaran plateau, with elevations ranging from 441 to 630 meters, providing a mix of gentle and challenging terrains. This region is characterized by its varied natural environment, including extensive forests, tranquil lakes, and proximity to majestic mountain ranges such as Belledonne, Chartreuse, and Vercors. The area's topography supports a network of routes suitable for…
Last updated: November 4, 2026
21
riders
46.9km
04:11
680m
680m
Hard bike ride. Very good fitness required. Mostly paved surfaces.
14
riders
39.1km
03:33
860m
850m
Hard bike ride. Very good fitness required. You may need to push your bike for some segments of this route.

7
riders
19.1km
01:45
290m
290m
Moderate bike ride. Good fitness required. Mostly paved surfaces.
6
riders
33.4km
02:57
520m
520m
Hard bike ride. Very good fitness required. Mostly paved surfaces.
7
riders
Moderate bike ride. Good fitness required. Mostly paved surfaces.
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Medieval origins (11th - 12th centuries): The religious site is of very ancient origin. From the end of the 11th century, several religious buildings are mentioned in the commune. The Saint-Pierre church itself is cited under the name "ecclesia de Anos" in the famous cartulary of Saint Hugues (Bishop of Grenoble). In the Middle Ages, the church was directly dependent on the priory of Saint-Laurent of Grenoble, as attested by an official terrier dating from 1497 under the name "ecclesia Sancti Petri de Fortaressia".
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Soierie de Bressieux (officially known as the Girodon factory-boarding school) is a former 19th-century silk weaving mill located in Saint-Siméon-de-Bressieux in Isère, built between 1873 and 1875 by Lyon industrialists and active until 1934.
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Built by a silk industrialist from Lyon in the second half of the 19th century, the Saint-Siméon-de-Bressieux factory has two parts linked together by a glass roof. Adjoining the factory, a large adobe building housed workers who, coming from very far away, stayed on site during the week.
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The view from the pass is worth the effort!
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Departure from the Col des Aures at 13% but on a short portion. Then aerial road with a very nice view, very little traffic and with a good coating.
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There is a small cafe, a free water point and a small picnic area in the sun.
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A fairly steady climb from Vinay, the start has easier grades of 2-4% with the second and final part increasing to 5-6%. The views from the top are definitely worth the effort!
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Located between the Chambarans and the Bièvre plain, it gives a view of "all horizons" at an altitude of 628m.
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There are over 50 dedicated no-traffic touring cycling routes around Marnans listed on komoot. The wider Isère department, where Marnans is located, offers an extensive network of over 850 km of signposted routes, many of which are suitable for touring cyclists seeking quiet roads and scenic beauty.
The routes around Marnans, situated on the Chambaran plateau, offer a mix of rolling hills and more challenging ascents. Elevations typically range from 441 to 630 meters, with some routes featuring climbs of over 800 meters, such as the Route des Crêtes – Toutes Aures Pass loop from Châtenay. You'll cycle through diverse landscapes including forests, river valleys, and open plateaus, providing varied experiences from gentle slopes to more demanding climbs.
Yes, while many routes offer moderate to difficult challenges, there are easier options suitable for families. The region's extensive network includes routes with minimal altitude changes, such as sections of the La Belle Via (V63) in the Isère Valley, which provides an accessible experience through orchards and charming villages. For a moderate local option, consider the Statue of Liberty – Roybon Church loop from Roybon, which covers 19 km with manageable elevation.
The routes around Marnans offer access to beautiful natural features and historical sites. You can explore the tranquil Chambaran forest, known for its shaded paths. Highlights include various mountain passes like Col de la Madeleine (Chambarans), Toutes Aures Pass, and Lachard Pass (695 m). Additionally, you might encounter historical sites such as the Château de Bressieux, offering a blend of natural beauty and cultural exploration.
The best time for touring cycling in Marnans is typically from spring to autumn (April to October). During these months, the weather is generally mild and pleasant, with less rainfall and warmer temperatures, making for comfortable riding conditions. Spring brings blooming landscapes, while autumn offers beautiful foliage. Summer is also suitable, though it can be warmer, especially in July and August.
Yes, many of the no-traffic touring cycling routes around Marnans are designed as circular loops, allowing you to start and end at the same point. Examples include the challenging Chevrière Ridges – Bressieux Silk Mill loop from Saint-Siméon-de-Bressieux and the moderate Toutes Aures Pass – Lachard Pass (695 m) loop from Saint-Pierre-de-Bressieux. These loops are ideal for exploring the diverse landscapes without needing to retrace your path.
The area is highly rated by the komoot community, with an average score of 4.1 stars from 16 ratings. Reviewers often praise the tranquility of the routes, the beautiful natural scenery of the Chambaran plateau, and the varied terrain that caters to different skill levels. The sense of being away from traffic and immersed in nature is a frequently highlighted aspect.
While Marnans itself is a small commune, the routes often pass through or near charming villages in the wider Isère department. These villages typically offer local cafes, bakeries, and small shops where you can refuel and rest. It's always a good idea to check your route in advance and plan stops, especially on longer tours, as amenities might be spaced out in more rural sections.
Accessing specific trailheads directly by public transport with a bike can be challenging in very rural areas like Marnans. However, the Isère department has a regional transport network. For longer journeys or connecting to major towns, regional trains (TER) often allow bikes, though specific rules and peak hour restrictions may apply. It's advisable to check the local transport operator's website for current bike policies and schedules when planning your trip.
For routes starting from villages or towns, you can usually find public parking areas. For example, routes like the Col des Croisettes loop start from Saint-Siméon-de-Bressieux, where village parking is typically available. Always look for designated parking spots to ensure your vehicle is safely and legally parked before embarking on your tour.
Generally, dogs are permitted on most public cycling routes in France, especially in rural areas, provided they are kept on a leash and under control. However, specific rules may apply in protected natural areas or private lands. Always be respectful of local regulations, wildlife, and other users. It's recommended to carry water for your dog and be mindful of their endurance on longer rides.


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