OpenSwim Harmonie Mutuelle Paris

OpenSwim Harmonie Mutuelle Paris is an open water swimming challenge in the Bassin de la Villette and the Canal de l'Ourcq, between Paris and Pantin

On July 11 and 12, 2026, the OpenSwim Harmonie Mutuelle Paris transforms the Seine and the Canal de l'Ourcq into aquatic competition venues, inviting amateurs and seasoned swimmers alike to choose from a variety of courses: 500 m, 1 km, 2 km, 2km fins, 5 km, 5 km fins, 4x500 m relay or an 8.5 km swim across Paris. Organized in the spirit of the legendary Traversée de Paris à la nage, this edition takes place in the port of Grenelle and in Pantin. The event features a swimmers' village, changing rooms and showers, as well as training and awareness-raising on water and environmental issues. A unique opportunity to combine sport, urban discovery and respect for the Seine.