Opening of the Mont Cenis and Iseran passes

The Mont Cenis and Iseran passes are open to traffic in summer and autumn. Access to Italy from Val Cenis is possible from May. The road between Val d'Isère and Bonneval sur Arc opens in June. The passes are usually closed to traffic in early November.

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Col du Mont Cenis

Route fermée depuis le vendredi 14 novembre 2025

En hiver, la route n’est plus accessible et devient en grande partie une piste de ski : L’Escargot, la plus longue piste verte d’Europe (11km).

Ouverture de la route prévue le vendredi 8 mai 2026

Habituellement, la route d’accès au col du Mont Cenis (2081 m d’altitude), et à l’Italie, est ouverte à la circulation le 2ème vendredi de mai, soit cette année le vendredi 8 mai 2026*.

*⚠ The opening or closing of the road may be brought forward or delayed by a few days depending on weather conditions.

Information
Find all the official information on Savoie's roads (opening of passes, roadworks...) on :
savoie-route.fr
Snow clearing on Col de l'Iseran, Bonneval sur Arc, opening of the Iseran road

Iseran pass

October 2025: road closed

Suite aux chutes de neige, le col est fermé à la circulation depuis le 23 octobre 2025 . En hiver, il n’est donc pas possible de passer de Bonneval sur Arc à Val d’Isere par cette route.

Road opening scheduled for early June 2026*.

Europe's highest road pass (2,764m), clearing snow from the Iseran is a major undertaking, requiring several weeks' work on both sides of the pass. Snow depths often reach 8 to 10m in some areas (notably at the "snow bridge" on the Bonneval sur Arc side).

Walls of snow are usually present on the side of the road until early July. Guaranteed selfie effect, but... be careful, there's regular traffic between cars, motorcycles and bikes on this mythical pass of the Route des Grandes Alpes.

*⚠ These dates may vary according to the weather.