Distance: 92 km
Level: Black level - Very difficult
Level: Mountain bikers
Elevation: 2170 D +
Departure: Saint-Geoire-en-Valdaine
Lake or body of water less than 300 m away, At the water's edge, In the countryside, In the forest
Recommended period (s): Autumn, Summer, Winter, Spring

Visitor alert: 
Be careful, large ruts have formed following the bad weather of the last few months, at the level of the descent towards the Notre-Dame de Milin chapel in the town of BURCIN, they can be difficult to cross by mountain bike. In the event of rain the days preceding your visit, the descent under Mont Follet (km 69) will be muddy and gullyed.

By mountain bike

This black circuit allows you to admire the diversity of the landscapes of the paths of the Pays Voironnais. You overlook the Lac de Paladru, discover the peaceful hills of Valdaine, skim past marshes, lakes and ponds. A great challenge for athletes!

You will not see the 92 kilometers of this route pass by whatever starting point you choose (Saint-Geoire-en-Valdaine or Charavines)! The first kilometers are on small, quiet country roads before taking you on forest or stony tracks, sometimes single-track in the undergrowth or across fields.

If you start from Saint-Geoire-en-Valdaine, around km 64 near Charavines, take a break and take advantage of the shops to get supplies.
If you start from Charavines, fill up on site or in Saint-Geoire-en-Valdaine, you will not find anything on the rest of the route.

A shortcut around km 83 (km 17 if you start from Charavines), at a place called La Davière (Massieu), allows you to avoid the climb to Lake Saint-Sixte and save you 5 km and 270 m of elevation gain ; markup indicating "shortcut" is in place.

Tips and Suggestions: 
The Natura Vélo MTB/Cyclo school offers mountain bike rentals, support and sales. Natura Vélo is located opposite the Tourist Office. Washing and inflation terminal in front of Natura Vélo, tokens on sale at Natura Vélo and at the Tourist Office.

Points of interest

Station multi-randos

Multi-hike resort

Château de Longpra
Cultural heritage

Longpra Castle

to report a problem



Free access.

Equipments & services


  • Public toilets
  • Parking
  • Free parking
  • Picnic area.


  • Coach access

Home of animals

  • Animals accepted: No


Two possible departures:
- Multi-hike station in Saint-Geoire-en-Valdaine
- In front of the Tourist Office in Charavines

Our contact details

No. 92 – Valdolac

Multi-hike resort

La Combe, under the municipal swimming pool

38620 Saint-Geoire-en-Valdaine

Getting to the starting point