Starting in Le Bourg d'Oisans, at the foot of the 21 bends, cyclists can pedal in complete peace and quiet, without exhaust fumes, right up to the last bend (road closed to motorized vehicles). Refreshments at the summit courtesy of Alpe d'Huez Tourist Office and Oisans Tourisme.

Distance: 12 km
Difference in altitude: 1092 m
Average time : 1h30

Oisans Col Series - Every Tuesday in summer - Roads closed to motor vehicles
Every Tuesday morning, cyclists can climb the following passes and roads without a car: Col de la Croix de Fer et du Glandon, Col du Solude, Col d'Ornon, Col de Sarenne, Col du Sabot, ascent to Alpe d'Huez, ascent to Villard Reculas, ascent to Oz en Oisans, ascent to Les 2 Alpes.

This is a free, non-timed gathering of cyclists, with no registration and no fixed start time. The organizer may be forced to cancel a date in the event of bad weather.
Be careful and respect the highway code!

Dates and routes Oisans Col Series 2025
Col de la Croix de Fer and Col du Glandon: Tuesday, July 1, 2025 from 9 a.m. to noon.
Col du Solude: Tuesday, July 8, 2025 from 9am to 11am.
Col du Sabot: Tuesday, July 15, 2025, 9am to 12pm.
Ascent to Villard-Reculas: Tuesday, July 22, 2025 from 9am to 11am.
Ascent to Les 2 Alpes : Tuesday, July 29, 2025 from 9am to 11am.
Col de Sarenne: Tuesday, August 5, 2025 from 8:45am to 12pm.
Col d'Ornon: Tuesday, August 12, 2025 from 9am to 11am.
Ascent to Oz-en-Oisans: Tuesday, August 19, 2025 from 9am to 11am.
Ascent to Alpe d'Huez: Tuesday, August 26, 2025 from 9am to 11am.

This climb is organized in partnership with Echappées Iséroises.