The Ultra Champsaur 83 km is a long mountain trail race held in Orcières, Hautes-Alpes. Runners begin from the village center at 4:30 a.m. and face approximately 5,333 meters of elevation gain, marking it as a demanding alpine ultra.
The route crosses the Champsaur valley, featuring trails, mountain passes, and vistas of the Écrins massif. The event also includes shorter races, ranging from a 10 km discovery run to 24 km and 42 km formats, accommodating both novice trail runners and seasoned mountain athletes within the same village.