Best mountain passes around Treffort are found in a region where the Bresse plain meets the Revermont mountains, near the first ranges of the Jura mountains. Treffort serves as a gateway to several notable mountain passes and unique mountainous features. This area offers diverse landscapes for exploration, from challenging climbs to scenic viewpoints. The passes provide access to the Vercors Massif and offer panoramic views of surrounding peaks.
Last updated: October 13, 2026
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In the afternoon heat on the south-facing slope, very little shade. The last 3km are steep. Warning, no water at La Bâtie (cemetery gate locked), refill well before!
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From Saint-Michel-les-Portes, it's about 7 km at an average gradient of 8%. The last few kilometers often reach double digits. A cruel climb if it's the last one of your day...
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Beautiful view and nice place with a table
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The Col de L'Arzelier isn't a very difficult pass, but it is long. Plenty of shade, which is great in the summer. Very little traffic.
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Here is the route for the ascent of the Col de l'Arzelier starting from Vif
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The Col des Deux is not located in the Bauges Massif but in the Vercors between the Col de l’Arzelier and the Col de l’Allimas. This trilogy is well known to cyclists in the Grenoble metropolitan area.
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Whether you're on gravel or mountain bike, this is a must-do for the many trails, paths, and roads that surround it. And the view of Mont-Aiguille 🤩
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The region around Treffort offers several passes with breathtaking views. Col de l'Allimas provides stunning vistas of the Grand Veymont and Mont Aiguille. The Pas de la Ville Pass, perched at 1,925 meters, offers panoramic views extending to the Écrins. Additionally, Col de l'Arzelier is known for its pleasant wooded sections and views away from traffic.
Yes, for experienced hikers seeking a challenge, the region offers demanding routes. The Bachassons Pass, for instance, is part of a hard mountaineering route from Gresse-en-Vercors, covering 22.2 km with an elevation gain of 1,720m, requiring a very good level of fitness.
Beyond traditional passes, you can visit the unique Himalayan Footbridges of Lac de Monteynard-Avignonet. These two exceptional footbridges, spanning the Drac and Ebron rivers, are suspended about 80 meters above the turquoise lake. They offer a memorable 12 km hike with varied landscapes and breathtaking views, though some passages may not be suitable for those prone to vertigo.
The area around Treffort is excellent for various outdoor activities. You can find numerous cycling routes, including challenging loops like the "View of Lac du Sautet – Col de l'Allimas loop." Mountain biking enthusiasts can explore trails such as the "Passerelles Trail – Ascent to Sénépi loop." For runners, there are routes like the "Tour des passerelles du lac de Monteynard-Avignonet." You can find more details on these activities in the dedicated guides for Cycling around Treffort, MTB Trails around Treffort, and Running Trails around Treffort.
While some routes are challenging, the area around the Himalayan Footbridges of Lac de Monteynard-Avignonet offers a memorable hike that can be enjoyed by families, keeping in mind the 12 km distance and 350m ascent. The lake itself is also popular for water sports, providing additional family-friendly options.
The best season generally depends on your preferred activity. Spring and autumn offer pleasant temperatures for hiking and cycling, with beautiful foliage in autumn. Summer is ideal for exploring the passes and enjoying water sports at Lac de Monteynard-Avignonet, though some wooded sections like those at Col de l'Arzelier are particularly pleasant in hot weather. Winter conditions can bring snow, making some passes suitable for winter sports or requiring specific gear.
The mountain passes around Treffort offer diverse and spectacular views. From passes like Col de l'Allimas, you can see the remarkable peaks of the Grand Veymont and Mont Aiguille. The Pas de la Ville Pass provides expansive panoramas of the Hauts-Plateaux du Vercors and the Écrins. Many passes also feature wooded sections and views away from traffic, offering a serene experience.
The Aupet Pass, situated at 1,627 meters, is notable for its geological significance. It is located precisely where a geological fault passes, which contributed to the erosion and separation of Mont Aiguille from the Vercors highlands. From this pass, you can access the foot of Mont Aiguille's cliffs and the upper Vercors via the Pas de la Selle.
Cyclists often enjoy the trilogy of passes in the Vercors between Col de l'Arzelier, Col des Deux, and Col de l'Allimas. These are well-known to cyclists in the Grenoble metropolitan area, offering varying gradients and scenic routes. For example, the climb to Col des Deux from St-Andéol is 12.3 km long with an average gradient of 7%.
Visitors frequently appreciate the diverse landscapes, from challenging climbs to serene wooded sections. The panoramic views of iconic peaks like the Grand Veymont, Mont Aiguille, and the Écrins are often highlighted. The unique experience of the Himalayan Footbridges also receives high praise for its breathtaking scenery and memorable hike. The komoot community has contributed over 70 upvotes and 26 photos, reflecting the general appeal of these passes.
Yes, many of the mountain passes are integrated into circular routes. For example, the Himalayan Footbridges offer a 12 km circular hike. The komoot platform also features various cycling and running loops that incorporate these passes, allowing for diverse circular exploration options. You can find specific routes in the Cycling around Treffort, MTB Trails around Treffort, and Running Trails around Treffort guides.


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