Col de l'Iseran: road opening and closing

The Col de l'Iseran road is open from June to November. Depending on the weather (snow), traffic may be interrupted, especially in autumn. The road is closed throughout the winter.

 

Col de l'Iseran, snow walls during the opening of the pass on the Bonneval sur Arc side, in June.
Summer

The Iseran Pass Road is open

As Europe’s highest road pass (2,764 m), clearing snow from the Iseran Pass is a major undertaking that requires several weeks of work on both sides of the pass between May and early June.

The access road to the Col de l’Iseran has been open since June 12, 2026.

Snowbanks usually line the roadside until early July. They make for great selfies, but… be careful—there’s steady traffic from cars, motorcycles, and bicycles on this legendary pass along the Route des Grandes Alpes. Cyclists: take advantage of the bike-only climb during the Iserane event in late June!

Information pictogram

Road information in Savoie

All the official information in real time (opening and closing of passes, works, etc.):

savoie-route.fr

Col de l'Iseran road, road closed sign, Bonneval sur Arc, snow-covered road
Winter

Road closure scheduled for November 2, 2026*

In winter, the pass is closed to traffic, usually starting on the first Monday in November—which, for next winter, will be November 2, 2026. Therefore, during the winter, it is not possible to travel from Bonneval sur Arc Val d’Isère via this route.

*⚠ These dates are subject to change depending on the weather.