The Port-Jérôme-sur-Seine Night Orienteering Race takes place at Parc du Telhuet, starting at 6:00 PM. Participants compete in teams of two, with options for 5 km, 10 km, and 15 km courses.
The 5 km course is designed for all participants, including families, and remains within the park grounds. The 10 km course is recommended for those with prior orienteering experience, incorporating both park and forest terrain. The 15 km course is intended for more experienced teams and primarily crosses forest areas. This event is organized by the FSE of Collège Calmette, with proceeds supporting school trips and college improvements. A meal is available for an additional charge.