Mountain pass - Col d'Ornon from La Paute (north slope)
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%).
Route details
Take the D526 from La Paute hamlet and follow it to Col d'Ornon.
Opening
From 01/05 to 31/10 daily.
Subject to favorable weather.
Discover more
Go there
Latitude : 45.073871
Longitude : 6.015165
Height : 727
route d'Ornon / D 526
Petit Vernay
38520 Le Bourg-d'Oisans
Go there
You can start this ascent from Le 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.
Information updated on 24/08/2026
by Isère Attractivité
