4.6
(12)
118
hikers
11
hikes
Mountaineering routes Saint-Julien-De-Raz are situated at the southern end of the Jura massif and the foot of the Chartreuse massif, offering a diverse landscape for outdoor activities. The region is characterized by rugged mountains, limestone plateaus like the Grand Ratz, and deep valleys. Notable features include the dramatic western flank of La Grande Sure and impressive geological formations within the Parc Naturel Régional de Chartreuse.
Last updated: October 18, 2026
5.0
(1)
14
hikers
11.6km
03:56
510m
510m
Moderate mountaineering route. Good fitness required. Mostly accessible paths. Sure-footedness required.
11
hikers
12.2km
04:59
910m
910m
Hard mountaineering route. Very good fitness required. Mostly accessible paths. Sure-footedness required.

5.0
(2)
14
hikers
13.7km
04:54
610m
610m
Moderate mountaineering route. Good fitness required. Mostly accessible paths. Sure-footedness required.
6
hikers
Moderate mountaineering route. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
5.0
(2)
11
hikers
14.9km
06:58
1,140m
1,140m
Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
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The climb to the charming Som from the Col de Porte is always a treat. There are some very steep sections, but the view at the top is worth it. Be careful on the descent: uneven road, tight bends, cars.
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Be careful, if in summer it is a fairly easy passage, in winter, as the surrounding slopes are steep, it is more prudent to have crampons
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Magnificent summit above the Col de la Ruchère, offering you one of the most beautiful panoramas of the Chartreuse.
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Accessible via a small road closed to cars, in great calm, you must also remain discreet and not make noise on this road and at the monastery. The slope is steep, very high percentages. The monastery is very beautiful.
1
0
A must-have! Big climb with steep slope before arriving at the monastery. Ideal for recharging your batteries.
1
0
Highest summer cheese dairy, perched in the middle of the Charmant Som mountain pasture. Well, okay, it's not really the season...
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Dominating the valley, the Orgeval oratory offers a magnificent view. When the weather permits, the Mont-Blanc massif can be seen in the distance.
1
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This beautiful single track joins the crests of Montfromage. The forest is dense but allows a glimpse of the surrounding landscapes and, in the distance, the Rochers de Chalves.
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0
There are 13 mountaineering routes around Saint-Julien-De-Raz, offering a diverse range of experiences within the Chartreuse and Jura massifs.
The routes around Saint-Julien-De-Raz are primarily categorized as moderate or difficult. You'll find 7 moderate routes and 6 difficult routes, reflecting the rugged and varied terrain of the Chartreuse massif.
While the listed mountaineering routes are generally moderate to difficult, the region offers other outdoor activities suitable for families. For easier walks, consider exploring areas like the Cascade de La Pisserotte, which provides an accessible and refreshing experience, especially in spring.
Many trails within the Parc Naturel Régional de Chartreuse are dog-friendly, but it's always best to check specific regulations for each route or protected area. Generally, dogs are permitted on leash, especially in less sensitive areas. Always ensure your dog is under control and respect local wildlife.
The region is rich in natural beauty. You might encounter significant peaks like Chamechaude or La Grande Sure, and explore geological features such as the Gorges du Bret. The Col de Porte (1326 m) and Col des Mille Martyrs are also notable mountain passes offering scenic views.
Yes, several routes are designed as loops. For example, you can explore the Oratoire d'Orgeval – Col de la Chavanette Signpost loop from Chamechaude, or the challenging Petit Som – Bovinant Pass loop from Monastère de la Grande-Chartreuse. Another option is the Piénom (1615 m) – Charmant Som summit loop from Chamechaude.
The routes in Saint-Julien-De-Raz are highly rated by the komoot community, with an average score of 4.7 stars. Mountaineers often praise the diverse landscape, the challenging ascents, and the breathtaking views offered by the Chartreuse massif.
Public transport options to specific trailheads can be limited in this mountainous region. It's advisable to check local bus schedules for connections to villages near the Chartreuse Regional Natural Park, such as Saint-Pierre-de-Chartreuse, and plan accordingly. Many trailheads may require private vehicle access.
Parking availability varies by trailhead. For routes originating near Monastère de la Grande-Chartreuse or Chamechaude, designated parking areas are often available. It's recommended to research specific trailhead parking details before your trip, especially during peak seasons.
Generally, permits are not required for hiking or mountaineering on established trails within the Chartreuse Regional Natural Park for day trips. However, specific regulations may apply for certain activities, overnight stays, or protected zones. Always check the official park website for the latest information.
The best time for mountaineering is typically from late spring to early autumn (May to October), when trails are clear of snow and weather conditions are more stable. Spring offers impressive waterfalls like Cascade de La Pisserotte due to snowmelt, while autumn provides vibrant foliage. Winter mountaineering is possible but requires specialized equipment and experience due to snow and ice.
Yes, for experienced mountaineers, routes like the Grand Som – Ruchère Pass loop from Monastère de la Grande-Chartreuse offer significant elevation gain and rugged terrain, providing a demanding and rewarding experience. The Petit Som – Bovinant Pass loop from Monastère de la Grande-Chartreuse is another difficult option.
While the Cascade de La Pisserotte is a popular natural attraction near Saint-Joseph-de-Rivière, it's typically accessed via a separate, shorter walk rather than being directly on the main mountaineering routes listed. It offers a refreshing detour, especially in March/April when snowmelt enhances its flow.


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