Trail Nocturne - Vallée de Joux

Runners start after dark for the Trail Nocturne - Vallée de Joux, a winter trail race in Le Chenit, Switzerland, within the Jura Vaudois. It takes place in early February, featuring a 10 km night course. The official Trail Vallée de Joux program also provides shorter and longer trail options within the event family. The route guides runners into snowy Jura terrain under the night sky. This is the race's focus: headlamp running, cold air, quiet trails, and a distinct atmosphere compared to a daytime mountain run. The event continues the spirit of the Nocturne des Loups, or Night of the Wolves, and is part of the Trophée series. The broader Trail Vallée de Joux organization also includes a Challenge des Maîtres du Temps with Trail Dent de Vaulion and prize drawings connected to the main trail weekend.