Distance: 9.5 km
Duration (average) : 2h
Level: Blue level - Moderate
Elevation: 418 D +
Departure: Coublevie
Yellow paint markings and directional posts at the main intersections (if there is no marking, stay on the main road)
In the countryside
Recommended period (s): Autumn, Summer, Winter, Spring


A beautiful walk accessible from the Gorges du Bret car park in Coublevie, which will take you to the top of Roche Brune where you will enjoy a magnificent panorama of the Cluse de Voreppe.

Itinerary Round trip on the same path.
Departing from the Gorges du Bret, you take the laces of a paved path bordered by retaining walls dating from quarrying. Then the path alternates between wooded parts and expanses of meadows to the top of Roche Brune.

The stages of the circuit (AR):
- The Gorges du Bret
- Civet field
- The Grand Ratz
- The Great Woods
- Brown Rock (936m)

Hiking route that we recommend you not to do in winter, especially when it has snowed.

Further information : Public toilets at the Martin Cluzel car park. La Grange Dîmière can be visited from May 1 to September 30, weekends in May, June and September, every day in July and August. Adapt your equipment according to your level and the weather. Do not leave the trails.

Tips and Suggestions: 
Buy the map of walks and hikes in the Pays Voironnais, grouping together more than 500 km of marked trails. It is on sale at 5€ in the two reception offices of Voiron and Lac de Paladru (in Charavines).

to report a problem



Free access.

Home of animals

  • Animals accepted: not communicated


Our contact details

Brown Rock

Bret Gorges car park

38500 Coublevie

Getting to the starting point