Mountain passes around Voissant, located in the Isère department of France, are found within the Chartreuse Regional Natural Park. This area features a landscape of pastures and forests, marking the southern extremity of the Jura massif. The region offers a blend of natural beauty, outdoor activities, and local history, including a protected alkaline peat bog and historical sites.
Last updated: April 28, 2026
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Very pleasant pass to climb, not too steep a slope, well marked all the way.
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End of the climb and arrival on the plateau
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Arriving from Cessieu, I made a small detour via Voissant then the remaining 4 km to the Col des Mille Martyrs. Easy climb, no cars on this early Sunday afternoon and a very beautiful forest upon arrival. Bucolic viewpoints as a bonus during the climb. The descent to Saint-Geoire-en-Valdaine is perfect. Super rolling surface and moderate slope allow you to reach 50 km/h effortlessly. Paradise exists, it is in Chartreuse.
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The Col des Égaux is a pass in the Chartreuse massif at an altitude of 958 m and located in the south of the Savoie department.
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The Col du Banchet is a mountain pass located at an altitude of 590 m in the Mont Tournier range, south of the Jura massif, in the Savoyard Avant-Pays, in the Savoie department.
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From Rochefort, the Col du Banchet climbs in a bend with a fairly steep passage on the first part. The view rewards the efforts made to get there.
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The Col des Égaux from Saint-Jean-de-Couz is 4.6 kilometers long with a total elevation gain of 319 meters. The average slope is 6.93% with maximum slopes of 9.3%.
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The mountain passes around Voissant are situated within the Chartreuse Regional Natural Park, offering a blend of natural beauty, outdoor activities, and local history. They mark the southern extremity of the Jura massif, featuring a landscape of pastures and forests. The area is known for its varied terrain, from accessible climbs to more challenging ascents, and even includes a protected alkaline peat bog.
For panoramic views, the Col des Mille Martyrs is highly recommended, especially from Saint-Nicolas de Macherin. The Col du Banchet also rewards visitors with great views after its climb, particularly from Rochefort.
Yes, the area around the Col des Mille Martyrs, particularly near Merlas, holds historical intrigue with legends of martyrdom and a mysterious sacrificial stone known as 'Pierre à Matta'. Additionally, the 'Festival col des 1000' music festival has taken place in a clearing at the foot of the pass since 1997.
The region offers a variety of outdoor activities. You can find numerous hiking trails, including moderate routes like the 'Monument Sacré Coeur — loop from La Roche' or 'Forest Trail – Grenant Stream loop from Saint-Béron - La Bridoire'. For cycling, there are gravel biking routes such as the 'Lac de Paladru – Our Lady of the Vines loop from Montferrat'. You can explore more options on the hiking guide or gravel biking guide for Voissant.
Yes, there are options for various skill levels. For example, the 'Viewpoint – Sacré Coeur Monument loop from Saint-Martin-de-Vaulserre' is an easy hiking route. Many trails around the passes, like those originating from the Col des Mille Martyrs, lead through pastures and forests, offering pleasant walks. You can find more details on the hiking guide around Voissant.
The mountain passes are particularly enjoyable during warmer months, as routes like the Col des Mille Martyrs offer shaded paths, providing a refreshing experience. This makes spring, summer, and early autumn ideal for cycling and hiking.
The passes offer varied terrain. The Col des Mille Martyrs is known for its accessible climb and pleasant descent, with a manageable ascent from Saint Béron (14.4 km, 4.9% average gradient). In contrast, the Col du Banchet has a fairly steep passage on its first part when climbing from Rochefort, making it more challenging. The Col des Égaux from Saint-Jean-de-Couz has an average slope of 6.93% with maximum slopes of 9.3%.
Yes, the Col des Mille Martyrs is home to a protected alkaline peat bog, designated as a Zone Naturelle d'Intérêt Écologique, Faunistique et Floristique (ZNIEFF). This 2.6-hectare area harbors a population of the incarnate orchid, highlighting the region's ecological significance.
While specific parking details for each pass are not always listed, mountain passes like the Col des Mille Martyrs are generally accessible by road, implying roadside parking or small designated areas at the pass or nearby trailheads. It's advisable to check local signage upon arrival.
The region around Voissant and the Chartreuse Regional Natural Park offers various amenities. While specific cafes or accommodations directly at the passes might be limited, nearby towns and villages will provide options for dining and lodging. For example, the Col des Mille Martyrs is near Saint-Geoire-en-Valdaine and Miribel-les-Échelles, which would have such facilities.
Visitors frequently praise the Col des Mille Martyrs for its accessible and fresh climb, followed by a very nice descent. The presence of a beautiful forest upon arrival and bucolic viewpoints during the climb are also highly appreciated. Many describe the descent as having a super rolling surface and moderate slope, making it a 'paradise' for cyclists.
The Col des Égaux is appreciated for being an uncrowded and shaded pass in the Chartreuse region. It serves as a convenient route, allowing access to Corbel from the Couz valley.
Yes, there are several running trails in the vicinity. You can find routes like the 'Running loop from Saint-Béron - La Bridoire' (moderate to difficult) or shorter, easier options like the 'Running loop from Picoudière'. More details are available on the running trails guide around Voissant.


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