Refine your search for walks in Couzon (cours d'eau) - Affluent du Guier
Couzon (cours d'eau) - Affluent du Guier walks
Le Grand Som from the Col du Cucheron
Visorando member 
8.74 km
+881 m
-880 m
5h 00
Difficult
Departure from Isère
This is definitely the easiest and shortest way to climb the Grand Som.
Caution for those prone to vertigo: between (2) and (3), the walk becomes a climb in places. The passages are often narrow and can be daunting.
Tour of the Saint-Pierre-de-Chartreuse valley
Visorando member 
13.11 km
+294 m
-291 m
4h 35
Moderate
Departure from Saint-Pierre-de-Chartreuse (Isère)
Leave the village and walk around the valley, discovering the main peaks as you go: Charmant Som, Chamechaude, Dent de Crolles, Scia and Grand Som. You will also pass through several Carthusian hamlets.
The Grand Som circular loop via the Col des Aures and Col de Mauvernay passes
Association / Club / Walk leader 13.32 km
+1,187 m
-1,187 m
7h 10
Difficult
Departure from Saint-Pierre-de-Chartreuse (Isère)
This extensive circular route will take you to one of the most legendary peaks in Chartreuse. Technical passages, magnificent views of the massif and the Chartreuse monastery, wild trails: it has it all!
Walks near Couzon (cours d'eau) - Affluent du Guier
Perquelin - Aulp du Seuil
Visorando member 
10.70 km
+1,427 m
-734 m
7h 10
Difficult
Departure from Saint-Pierre-de-Chartreuse (Isère)
Stage 1: La Dent de Crolles via the cave route, then the ridge to the Col de Bellefond and finally descent to the Aulp du Seuil for a short bivouac near the sheepfold.Moderator's note for overnight stays, see notice dated 21/11/20223/10/2023 Moderator's message: some paths and trails are closed, see practical information.
⚠️ 27/11/2025: Hiking prohibited. A rockslide has occurred at Dent de Crolles. Following this incident, the municipality of Saint-Pierre de Chartreuse has issueda municipal decree toclose several hiking trails (walking, snowshoeing, ski touring). Please let us know if the trails reopen.
Cabane de Pravouta - La Plagne
Visorando member 24.79 km
+1,362 m
-1,893 m
12 hrs
Very difficult
Departure from Saint-Pierre-de-Chartreuse (Isère)
Third and final day of this trip to Chartreuse to pick up the car.
⚠️ 27/11/2025: Hiking prohibited. A rockslide has occurred at Dent de Crolles. Following this incident, the municipality of Saint-Pierre de Chartreuse has issueda municipal decree toclose several hiking trails (for walking, snowshoeing and ski touring). Please let us know if the trails reopen.
From Col du Coq to Sainte-Marie-du-Mont
Visorando member 23.00 km
+1,348 m
-1,810 m
10h 25
Very difficult
Departure from Saint-Pancrasse (Isère)
The route runs mainly through the Chartreuse Natural Park, passing through the massif's iconic passes and mountains. The route combines fairly steep climbs, passages through plateaus, mountain pastures and a village.
Easy