The Choco Trail d'Hardricourt awards finishers a chocolate medal, offers hot chocolate at aid stations, and provides a small box of chocolates at the finish. This December event in Hardricourt, Yvelines, west of Paris, includes races and walks for children and adults. The schedule ranges from short children's races (ages 6-15) to 8 km and 13 km hikes, a 12 km night race, and trail routes from 8 km up to a 42 km marathon.
The courses traverse the French Vexin region near Hardricourt, featuring local villages and green spaces rather than urban streets. Distances are available for beginners, casual runners, hikers, club members, and experienced trail athletes. The chocolate theme originates from Hardricourt's Barry chocolate factory, with the event established to link the town's natural surroundings to its local chocolate legacy.