Molière Plateau – View of La Molière loop from Autrans-Méaudre en Vercors
Molière Plateau – View of La Molière loop from Autrans-Méaudre en Vercors
4.6
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161
riders
Molière Plateau – View of La Molière loop from Autrans-Méaudre en Vercors
03:05
36.9km
760m
Cycling
Hard bike ride. Very good fitness required. You may need to push your bike for some segments of this route. The starting point of the route is accessible with public transport.
Last updated: September 9, 2026
Tips
Temporary access restrictions
Includes segments with temporary access restrictions.
After 7.31 km for 730 m
Closed: • December-April
After 8.04 km for 509 m
Closed: • November 15-April 15 (otherwise open)
After 8.55 km for 206 m
Closed: • December-April
After 29.6 km for 762 m
Closed: • November-April
After 31.6 km for 928 m
Closed: • November-April
Waypoints
Start point
Bus stop
8.66 km
Mortier Tunnel
Highlight • Structure
On the occasion of the Winter Olympic Games in Grenoble, which took place from February 6 to 18, 1968, a 18.3 km road with a height difference of approximately 1,200 meters was built to connect the Autrans plateau (where some events took place) and the Isère Valley via the villages of St-Quentin and then Toulaud. The route of this road then ended with an underground structure; the Mortier tunnel, 515 meters long and allowing passage under the cliffs of the Pointe de la Buffe.
But the engineers of the time who had traced this route had clearly underestimated the risks of landslides. On two occasions, in 1971 (50,000 m3) and then in 1992 (20,000 m3), the road was swept away by huge rock falls from the cliffs overlooking it a few hundred metres from the eastern entrance to the structure.
Given the high costs of repair and the risk of further rock falls, local elected officials decided to abandon this route for good. The trench caused by the rock falls can now only be crossed on foot via a chaotic path across a steep slope. With no exit, the Tunnel, accessible only from Autrans, is also abandoned, subject to drafts and the ravages of time.
Translated by Google •
Tip by
16.8 km
Molière Plateau
Highlight • Other
Translated by Google •
Tip by
16.8 km
View of La Molière
Highlight • Viewpoint
Showing Translation
Tip by
21.7 km
View from La Sure
Highlight • Other
29.0 km
Gève Refuge
Highlight • Mountain Hut
Translated by Google •
Tip by
30.8 km
Chemin du Sabot
Highlight • Trail
Translated by Google •
Tip by
36.9 km
End point
Bus stop
Way Types & Surfaces
Way Types
20.5 km
14.4 km
1.95 km
< 100 m
Surfaces
13.0 km
12.9 km
10.2 km
521 m
403 m
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Sign up for freeElevation
Highest point (1,630 m)
Lowest point (1,050 m)
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Tuesday 20 October
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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
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