[A CONFIRMER] Trail'Oween des Clayes-sous-Bois - 10 km 2026

Trail'Oween des Clayes-sous-Bois is a short forest trail race in Les Clayes-sous-Bois, located in the Yvelines west of Paris. The 10 km race takes place entirely within the woods and includes approximately 175 meters of elevation gain, presenting a compact trail experience rather than a flat road run. The event date requires confirmation; runners should verify with the organizer before registering. Dadoo Run Run organizes this event, which also features a 20 km trail with around 350 meters of climbing and a 10 km walk. Aid stations and changing rooms are available on-site. The race supports Imagine for Margo, an association dedicated to children with cancer, providing a charitable purpose beyond the forest course.