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le Grand Rocher walks
Le Grand Rocher via the Crêt du Poulet refuge
Visorando Member
7.63 mi
+1,657 ft
-1,670 ft
4h 55
Moderate
Departure from Saint-Pierre-d'Allevard (Isère)
An easy hiking version of this climb to the Grand Rocher. Once past the refuge, the route follows the Crêt Luisard ridge, where the view is breathtaking in all directions, and you can even see Mont Blanc from the summit.
Crêt du Poulet, Grand Rocher and Col du Merdaret circular loop
9.59 mi
+1,982 ft
-1,988 ft
6h 10
Moderate
Departure from Theys (Isère)
A beautiful circular route on the ridge of the Grand Rocher, which acts as a balcony with a superb panorama of the Haut-Bréda valley, the Allevard massif and the Sept Laux massif. Easy access from the Barioz cross-country ski centre and an easy route to do in mid-spring when the peaks are still snow-covered.
Walks near le Grand Rocher
Sept Laux J2
10.35 mi
+2,408 ft
-5,026 ft
6h 50
Difficult
Departure from La Ferrière (Isère) (Isère)
The second stage of this circular route in the Belledonne Massif, sometimes along a balcony trail, sometimes through wild valleys, takes you around the Allevard Massif.
⚠️15/06/2026: a notice indicates a rockfall at Cul de la Vieille between 2 and 3, making it impossible to follow this route. You must take the GR®738 as a detour. Please let us know in the comments if you have any information regarding the lifting of this notice.
Lac de la Jasse and Col de Bédina
4.20 mi
+410 ft
-2,562 ft
2h 15
Moderate
Departure from Les Adrets (Isère)
A beautiful high-altitude lake accessible by chairlift from Prapoutel. Descent via the wilder side of the resort. Passes by Gros Caillou, a popular spot for climbers.
From Lac de la Jasse to Prapoutel via Gros Cailloux
3.08 mi
+2,241 ft
-2,684 ft
3h 20
Moderate
Departure from Les Adrets (Isère)
This is a magnificent, easy walk that takes you through many beautiful natural sites, with breathtaking views of the Grésivaudan valley and the Chartreuse mountains.
Pont de la Betta - Lac Blanc
7.77 mi
+4,072 ft
-1,286 ft
7h 05
Difficult
Departure from Laval (Isère)
First stage of this lovely circular route in Belledonne, with the magnificent mountain lake, Lac Blanc, as the final backdrop.
Sept Laux Day 1
7.18 mi
+4,232 ft
-1,614 ft
7h 00
Difficult
Departure from Laval (Isère)
A very beautiful stage in the Belledonne Massif, starting from the mountain pastures, which takes us through a mineral world to a setting of tranquillity on the edge of the Sept Laux (seven lakes).
Le Pal de Fer
1.43 mi
+2,001 ft
-0 ft
2h 25
Moderate
Departure from Crolles (Isère)
An original outing that allows you to discover the superb work carried out here for the construction of the Touvet funicular railway. The ascent is on foot and the descent, to relieve the knees, is by funicular.
(Please note): This route is currently closed. See explanations here
(Comment from a hiker) dated 18 June 2023: small difficult section: crossing the scree slope where you need to use two ropes to reach the path in the forest.
Aulp du Seuil Hut – Pravouta Hut
6.81 mi
+2,815 ft
-3,009 ft
8 hrs
Very difficult
Departure from Saint-Bernard (Isère) (Isère)
Day2 of this trip via the Col de Bellefont to reach the Dent de Crolles plateau.Descent via the pass above the Trou du Glaz, then down to the Col des Ayes and up the Roc d’Arguille to the Col de Pravouta and the hut of the same name.
⚠️ 27/11/2025: Route modified following a rockfall. It is no longer possible to take the path via the Trou du Glaz (5). The area remains particularly dangerous due to the high risk of further rockfall and falling boulders. Following this incident, the municipality of Saint-Pierre de Chartreuse has issued a by-law to close several hiking trails (for walking, snowshoeing and ski touring). For an ascent of the Dent de Crolles, it is possible to take the route via the Pas de l’Oeille.
You can also go via the Guiers waterfalls to reach (E).
Lac Blanc – Lac de Crop – Pont de la Betta
6.94 mi
+1,972 ft
-4,715 ft
4h 55
Difficult
Departure from Sainte-Agnès (Isère) (Isère)
The second stage of this Tour du Grand Replomb takes you through a rocky landscape with a steep descent towards Lac de Crop.
From Col du Coq to Sainte-Marie-du-Mont
14.29 mi
+4,423 ft
-5,938 ft
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.