Best mountain passes around Saint-Julien-De-Raz are located within the Chartreuse Alps, a region known for its challenging routes and scenic landscapes. This area, encompassing the former commune of Saint-Julien-De-Raz, offers diverse terrain for outdoor activities. The Chartreuse massif features numerous mountain passes popular for both cycling and hiking. Visitors can explore a variety of routes, from demanding climbs to accessible paths, all set within a rugged natural environment.
Last updated: July 10, 2026
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Popular around Saint-Julien-De-Raz
Small pass, easy climb from the north, great descent to the south.
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The approach from the south is very nice, the descent to the north via the forest road is not allowed, but with great caution and pushing in tunnels possible
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Favor the climb via Sarcenas, almost no cars
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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 de la Charmette is hidden in the middle of the Chartreuse at the end of a dead-end road at an altitude of 1,261 meters. Located in the middle of the forest, it is a starting point for many hiking trails.
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Popular with cyclists, the Col de Porte provides the main connection between the Chartreuse massif and Grenoble. Located at an altitude of 1,324 meters, there is parking and a hostel.
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The mountain passes in the Chartreuse Alps, near Saint-Julien-De-Raz, are generally known for their challenging routes and scenic beauty. You can expect demanding climbs, with some sections exceeding 10% or even 12% gradients, such as on the Col de Porte (1326 m) with an average slope of 7.2% over 15 kilometers, or the Col de Cucheron. Some passes, like the Ascent to Col du Coq from Saint-Hugues, feature irregular and difficult climbs on quiet, less-maintained roads, offering a wilder experience.
Yes, several passes offer challenging cycling experiences. The Col de Cucheron, for instance, features a demanding 14km climb with sections over 10%. The Col des Mille Martyrs is also part of several challenging cycling loops, ideal for experienced cyclists seeking a significant workout. The Col de Porte (1326 m) is another classic cycling route with a 15-kilometer climb and an average slope of 7.2%.
Many passes in the Chartreuse Alps provide impressive views. The Col de Cucheron offers extensive vistas, while the Col de la Placette provides a view of the Infernet Gorge. The Col des Mille Martyrs offers bucolic viewpoints during its climb through beautiful forests. The Charmette Pass is known for its beautiful climb through the forest, leading to a pretty pass in the heart of Chartreuse.
The region around Saint-Julien-De-Raz is excellent for various outdoor activities. You can find numerous mountain hikes, such as the 'Oratoire d'Orgeval – Col de la Chavanette Signpost loop' or the 'Petit Som – Bovinant Pass loop'. For cyclists, there are extensive road cycling routes, including loops incorporating the Col des Mille Martyrs or the Col du Cucheron. Gravel biking is also popular, with routes like the 'Charmette Pass – Col de la Charmette loop'. You can explore more options in the Mountain Hikes around Saint-Julien-De-Raz, Road Cycling Routes around Saint-Julien-De-Raz, and Gravel biking around Saint-Julien-De-Raz guides.
Yes, the Col du Granier, located in the Chartreuse Alps, has significant historical context. A major landslide in 1248 dramatically altered the mountain's distinctive shape, adding another layer of interest to the area beyond its scenic beauty and challenging cycling routes.
Visitors frequently appreciate the challenging nature of the climbs, the stunning natural beauty, and the quiet, less-trafficked roads on many of the passes. For example, the Col des Mille Martyrs is praised for its fresh and easy climb from Saint-Nicolas de Macherin, followed by a very nice descent and beautiful forest scenery. The Charmette Pass is loved for its beautiful climb in the forest with less car traffic.
Yes, the Charmette Pass is known as one of the 'secret passes of Chartreuse'. It offers a beautiful climb through the forest with less car traffic, concluding at a picturesque pass in the heart of Chartreuse. Be aware that the road surface can be degraded in some places, especially on the south side.
The best time to visit the mountain passes in the Chartreuse Alps for cycling and hiking is generally during the warmer months, from late spring to early autumn (May to October), when the passes are clear of snow and weather conditions are most favorable. During winter, some higher passes may be closed or require specialized equipment for winter hiking or skiing.
While Saint-Julien-De-Raz itself is a small former commune, the surrounding Chartreuse Alps region, including towns like Saint-Pierre-de-Chartreuse or Grenoble, offers various accommodation options, cafes, and restaurants. Some passes, like the Col des Mille Martyrs, even have spots suitable for a shaded snack after a pleasant climb.
The Col de la Placette offers a great destination for hikers. A hard hiking loop from Saint-Julien-de-Raz includes this pass, covering 14.3km with a 630m elevation gain, requiring good fitness and sure-footedness. It provides accessible paths and views of the Infernet Gorge.
The Col de Cucheron is part of a famous route traversing the Chartreuse massif. A demanding 14km climb to the pass can be started from Saint Laurent du Pont. It's also accessible as part of larger cycling loops that connect various passes in the Chartreuse Alps, often originating from nearby towns like Chambéry or Grenoble.
While direct public transport to the very top of every pass might be limited, major towns in the Chartreuse region, such as Grenoble or Chambéry, serve as hubs with public transport connections to smaller villages at the base of some climbs. From these villages, you would typically start your hike or cycle. It's advisable to check local bus schedules for specific routes to trailheads.


See even more epic mountain passes by checking out these guides around Saint-Julien-De-Raz: