Les Foulées Guernoises begins at the stadium on chemin des Tertres in Guernes, a village in Yvelines west of Paris. Held in late September, it is a timed race event featuring a 10 km road race, a 5 km nature race, a 7 km Nordic walk, and a youth race.
The courses are distinct for each format and feature modest elevation gains: 22 m on the 5 km, 35 m on the Nordic walk, and 38 m on the 10 km. Les Foulées Guernoises organizes the event with CAMV and local partners, and the youth race raises funds for the Téléthon.