Col d'Ornon marks the passage between Oisans and Valbonnais valleys.
The only difficult part of the northern ascent of the Ornon pass is the slightly steeper slope before reaching the pass.
The route starts from La Paute and is not very long at 10.4 km. The climb is irregular, and the average gradient is a demanding 6%. There are a few flat spots up to the Pont des Oulles. From there, the gradient is steeper (between 6.5 and 8%).
Technical Information
Racing biking
Difficulty
Easy
Duration
1h
Dist.
11 km
Type of practice
Racing biking
Easy
1h
Pos. Elev.
651 m
Neg. Elev.
9 m
Max. Alt.
1371 m
Min. Alt.
726 m
Circuit updated on 26/08/2026
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Altimetric profile
Starting point
route d'Ornon / D 526 Petit Vernay
,
38520Le Bourg-d'Oisans
Buses run between Grenoble station and Le Bourg-d'Oisans:
- regular bus line: car Région T75 (to/from Grenoble)
- regular bus service: Zou bus line LER 55 (to/from Grenoble or Briançon)
Vehicles on these routes are equipped with bike racks. Please enquire in advance.
Guidebook with maps/step-by-step
Take the D526 from La Paute hamlet and follow it to Col d'Ornon.
We have no information on the difficulty of this circuit. You may encounter some surprises along the way. Before you go, please feel free to inquire more and take all necessary precautions. Have a good trip! 🌳🥾
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