Distance: 15.6 km
Level: Blue level - Moderate
Elevation: 1070 D +
Departure: Voreppe
Recommended period (s): Autumn, Summer, Winter, Spring


Departing from the monastery, this route will lead the trailers initially in the valley before going up from Gachetière to the Aiguille de Chalais.
Circuit not recommended in case of snow.

This essentially forest course is intended for an average to experienced public, wishing to make a discovery loop around the Monastery.

Shortly after leaving the monastery, the course plunges (nearly 700 m of negative elevation) onto the Chevalon de Voreppe via the base of the Mont-St Martin chimney with beautiful single-track sections on limestone soil. You then graze the Bourg-Vieux district (short tar section) before going up from Gachetière towards Le Clet. Don't miss the discreet Pisserote waterfall (footbridge)! The forest is everywhere to bypass the Mollard d'Arbon. From Bouzonnière, a nice ascent (320 m in altitude) brings you back to the Col de Chalais. You still have to complete the Aiguille loop.

A flexible and comfortable ground, in false flat leads you to the belvedere of the Rocher de Bellevue (possible glance). Then a dry climb to the top with two small rocky passages and a final comfortable descent, without traps, takes you back to the monastery.

The stages of the course:
- Chalais Monastery
- Chimney of Mont Saint-Martin
- Le Cuchet
- The Chevalon
- Gachetiere
- The Clet
- Bouzonniere
- Chalais (Needle loop)
- Chalais Monastery

Topo/step by step: 
Benefit from voice guidance on OnPiste: https://www.onpiste.com/explorer/destinations/pays-voironnais-426

Points of interest

Biscuiterie Saint Dominique

Biscuit factory Saint Dominique

to report a problem



Free access.

Equipments & services


  • Parking nearby

Home of animals

  • Animals accepted: not communicated


Our contact details

N°70: Loop around Chalais

Chalais Monastery

4581 Chalais Road

38340 Voreppe

Getting to the starting point