Grand Trail de la Vallée d'Ossau

The Grand Trail de la Vallée d'Ossau begins in Laruns, located in the Pyrénées-Atlantiques department of France's Nouvelle-Aquitaine region. This July event features a 74 km main trail race, a 25 km option, and relay formats. The primary course includes 4,600 meters of elevation gain, and the 25 km race offers approximately 1,500 meters of ascent. The courses traverse the mountainous terrain of the Ossau valley, incorporating high-altitude segments within a natural environment, distinct from road races. Participants can choose the entire course solo or divide it into 39 km and 35 km legs for relay teams. As part of the UTMB World Series, the event utilizes UTMB Index categories, attracting runners seeking a challenging mountain race. PPau Pyrénées Aventure, the organizer, emphasizes an eco-responsible approach to the event.