The Trail du Bois Joli is a 16.6 km nature run held in Tréméreuc, a village in Brittany near Dinan. Dinan Triathlon organizes this event, which begins in Tréméreuc in the morning. Runners follow a single, continuous loop instead of a point-to-point course.
The course winds around the Bois Joli pond before extending beyond Tréméreuc into the adjacent communes of Pleurtuit and Beaussais-sur-Mer. This is a local trail race emphasizing the countryside: one loop, three communes, and the pond that lends the event its name.