[A CONFIRMER] Trail du Pays de Sully - 10 km MN 2026

La Sully is the 10 km race within the Courses du Château de Sully at Rosny-sous-Bois, west of Paris. Participants begin and end at Stade Roland Leduc. The 10 km race starts in the afternoon, following the children’s races and the 5 km La Rosnéenne. The course winds through the park of the Château de Rosny-sur-Seine and along the Seine riverbanks. The château grounds are specially opened for the event. The programme also features a 5 km walk, La Marquise, and children’s races, Les P’tits bouchons. Entries support the La Note Rose charity.