In cycling circles, the Joux-Plane pass is reputed as being one of the six most challenging passes in the French mountains, along with the Galibier, Izoard, Alpe d'Huez, Mont Ventoux and Tourmalet ascents.
From 20/04 to 15/12.
The pass is closed in winter and used for Nordic skiing etc. The road may be closed for road works at other times of the year: check with the Tourist Office for information.