4.5
(151)
700
riders
97
rides
Mountain biking around Saint-Geoirs, located in the Isère department of France, offers a diverse landscape for outdoor enthusiasts. The region is characterized by rolling forests, mountainous terrain, and varied elevations, providing a dynamic environment for trails. Riders can expect a mix of challenging mountain passes and more moderate loops, with surfaces ranging from paved to unpaved. This topography supports a range of mountain biking experiences, from demanding climbs to scenic descents.
Last updated: May 20, 2026
5.0
(1)
5
riders
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
4.0
(2)
5
riders
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.

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5.0
(2)
6
riders
18.7km
01:47
480m
480m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
5.0
(2)
3
riders
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
3.5
(2)
4
riders
36.2km
02:25
260m
260m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
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Magnificent 360 degree view from the castle keep!
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The Romanesque church of Saint-Pierre-de-Marnans, in Marnans, dates from the 12th century and is a major building of Romanesque art in Dauphiné. It is listed as a Historic Monument and every year hosts artists during the “Lesétés de Marnans” festival.
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The ruins of the feudal castle of Bressieux were classified as Historic Monuments in 1904. Many artists were inspired by it, the most famous of which was Jongkind who produced a watercolor in 1879 which is currently in the Louvre.
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The view from the pass is worth the effort!
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The Col de Chatain from Tullins is 7.23 km long with a total drop of 469 m. The average gradient is 6.49% with maximum gradients of 12%.
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An orientation table that allows you to have a nice panorama.
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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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The 360° view is magnificent!
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There are nearly 100 mountain bike trails around Saint-Geoirs, offering a wide range of options for different skill levels. This includes 11 easy routes, 41 moderate routes, and 40 difficult routes.
The terrain around Saint-Geoirs is diverse, characterized by rolling forests, mountainous sections, and varied elevations. You'll encounter a mix of challenging mountain passes and more moderate loops, with surfaces ranging from paved to unpaved, providing a dynamic mountain biking experience.
Yes, many of the mountain bike trails around Saint-Geoirs are circular loops. For example, the difficult Col de Toutes Aures – Toutes Aures Pass loop from Brion is a 55.9 km circular route, and the moderate Château de Bressieux – Toutes Aures Pass loop from Saint-Étienne-de-Saint-Geoirs covers 28.6 km in a loop.
For experienced riders seeking a challenge, the Col de Toutes Aures – Toutes Aures Pass loop from Brion is a difficult 55.9 km trail with significant elevation gain. Another demanding option is the Col Lachard – Col de Châtain loop from La Forteresse, which is 18.5 km long and also rated difficult.
Absolutely. Intermediate riders can enjoy routes like the Château des Ayes – Château de Bressieux loop from Saint-Étienne-de-Saint-Geoirs, a 46.5 km moderate trail through forested areas. Another great option is the Col de Toutes Aures – Château des Ayes loop from Saint-Étienne-de-Saint-Geoirs, which is 27.5 km and also rated moderate.
The mountain bike trails in Saint-Geoirs are highly rated by the komoot community, with an average score of 4.4 stars from over 140 reviews. More than 700 mountain bikers have explored the varied terrain, often praising the diverse landscapes and challenging climbs.
While riding, you might encounter historical sites and scenic passes. Some nearby attractions include the Château Louis XI and the Notre-Dame-du-Mont Chapel. The region is also known for its mountain passes like Toutes Aures Pass and Col de Châtain (684 m), which offer panoramic views.
The Col de Châtain (684 m), situated between the Chambarans and the Bièvre plain, offers panoramic views and provides amenities such as a cafe, a free water point, and a picnic area, making it a good spot for a break during your ride.
The region's varied terrain and proximity to mountainous areas suggest that spring through autumn would generally be ideal for mountain biking, offering pleasant temperatures and clear trails. Winter conditions might introduce snow or ice, especially at higher elevations, making some trails more challenging or inaccessible.
Yes, the broader Grenoble area, which includes Saint-Geoirs, is recognized for its 'rolling forests and mountains' and provides numerous routes where enthusiasts can navigate slopes and slalom through rocks, making it suitable for both traditional mountain bikes and electric mountain bikes. For more information on routes in the wider area, you can visit grenoble-tourisme.com.
Yes, the area around Saint-Geoirs has several historical sites. You can find highlights such as the old market hall and various castles like Château de Montgontier, which can be explored in conjunction with your mountain biking adventures.


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