La Forest'yerres 2027

La Forest'yerres is a small nature-running series in Yerres, Essonne, centered on the Forêt de la Grange. The primary events are 15 km and 8 km trail-style races for adults, both beginning in the morning. The program also features 2 km and 1 km children’s races. The courses wind through the forest bordering the Yerres valley, offering runners sandy paths and natural tracks instead of a road-race environment. This event is suited for outdoor runners seeking a local forest run, families with children participating in the shorter races, and individuals looking for a concise race day with distances that do not demand ultra-runner endurance.