Trail blanc de grendelbruch - Ottrott 2027

The Trail Blanc de Grendelbruch is a winter trail-running event in the Bas-Rhin area of eastern France, located near Ottrott with starts in Grendelbruch. It takes place in February in the Bruche valley, offering short-distance trail races rather than long mountain ultras: the main options are 10 km and 16 km. The longer route covers approximately 16 km with 380 to 400 meters of climbing, while the shorter route is 10 km with 167 meters of positive elevation. The start times for the two distances are staggered, with the 16 km beginning earlier in the afternoon and the 10 km later, creating a compact race-day schedule suited for local runners and short winter trail efforts.