Trail du Pays de Sully 2026

The Trail du Pays de Sully directs participants exclusively onto forest paths within the forest of Rosny-sur-Seine, located west of Paris. The race day is scheduled for September and features three trail running distances: 11 km, 19 km, and 31 km. A 15 km walk is also available, making the day inclusive for non-runners. The elevation gains are significant for these distances: approximately 300 m for the 11 km, 530 m for the 19 km, 800 m for the 31 km, and 400 m for the walk. The course remains on paths and trails within the forest, classifying it as a woodland trail event rather than a road race with occasional off-road segments. The longest race includes a time limit at the second aid station; runners must reach the 21 km mark within 3 hours and 30 minutes. CSM Rosny-sur-Seine Athletisme and its volunteers organize the event, which is open to all. The race maintains an online presence, providing access to registration, participant lists, partners, and YouTube videos.