Les Boucles d'Usseau 79 is a small trail-running event in Usseau, Nouvelle-Aquitaine, western France, near Poitiers. It takes place around the end of March, offering two short off-road distances: 5 km and 10 km.
Both races are run on a loop course, with one loop for the 5 km and one loop for the 10 km. The 10 km trail is the more popular option. Past editions have drawn over 100 runners, indicating it is a local race rather than a large-scale event.