The Eragny Tour begins at the Gymnase de la Butte in Éragny-sur-Oise, a town in Val-d’Oise, northwest of Paris in Île-de-France. This is a community running event offering several distances, including 5.8 km and 10 km circuits, allowing participants to select a short local run or a more standard road-race distance.
The gym serves as the race center, hosting the start line and transforming into a small stadium for the afternoon. The field is open to both experienced athletes and amateurs, contributing to a town race atmosphere rather than a specialist competition. The event has already held multiple editions, with its ninth edition noted in the race materials.