Trail la griffon'Yerres 2027

Trail la griffon'Yerres is a forest trail race series held in the Grange forest massif, overlooking the Yerres valley, with finishes at Léo Lagrange stadium. It features several distances: the Grande Griffon'Yerres at 23 km with 600 m of elevation gain, the Petite Griffon'Yerres at 12 km with 285 m of elevation gain, a 3 km option for individuals or teams, and a 1 km race for children within the stadium. The longer courses traverse varied forest terrain and uneven ground, including the ascent of Mont Griffon, reaching an elevation of 115 m. The 23 km race, a more technical course run over two distinct loops, is intended for experienced trail runners and is part of the Challenge Nature. The 12 km route is designed for those new to trail running, and the 3 km race offers a brief forest running experience for younger participants and adults.