Distance: 11.8 km
Level: Mountain bikers
Level: Blue level - Moderate
Level: Suitable for beginners
Elevation: 240 D +
Departure: Saint-Geoire-en-Valdaine
MTB markings, circuit n ° 33.
In the countryside, In the forest, Pond less than 300 m
Recommended period (s): Autumn, Summer, Winter, Spring
Attention, be careful when crossing the secondary road.

By mountain bike

Circuit with very varied terrain. After a warm-up on flat and winding paths, you will tackle a steady climb, rewarded by a beautiful descent in the undergrowth.

You cross one of the richest natural sites in the department of Isère (Natura 2000 area: stay on the path) and walk along the Château de la Lambertière, the Château de Longpra and the Saint-Georges church.

The +: the multi-hike station, the spot for multi-activities and the picnic break

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

Points of interest

Château de Longpra
Cultural heritage

Longpra Castle

Brasserie artisanale du Val d’Ainan  « La Dauphine »

Traditional brewery of the Val d'Ainan "La Dauphine"

to report a problem



Free access.

Equipments & services


  • Picnic area.
  • Parking
  • Free parking

Home of animals

  • Animals accepted: Yes
  • Animals accepted without supplement


Contact Informations

N°33 – From Marais to Castles

Multi-randos station (under the municipal swimming pool)


38620 Saint-Geoire-en-Valdaine

Getting to the starting point