Grandvi'trail is a local trail-running event in Grandvillars, offering race options for beginners and those seeking a longer challenge. The event features a 7 km Trail découverte, an 11 km trail with 200 meters of elevation gain, and a 21 km trail with 500 meters of elevation gain.
The courses are designed as trail races, not road races, with the primary decision being the desired distance and elevation. Organized by Les coureurs de l'Allaine, the recurring "Trail découverte" designation indicates a community race focused on accessible off-road running, rather than a demanding mountain course.