La guyancourse - Guyancourt 2027

The La Guyancourse begins and ends at the Gymnase des Droits de l'Homme in Guyancourt, France, with all races returning to this sports hall. This is the 30th edition, featuring a 22 km trail race, an 11 km nature run, a 13 km Nordic walk, and a 2 km para-athletics race for adults. The longer courses follow forest paths and roads near the Bièvre's sources, including hilly natural terrain and a closed road section. Participation is limited to 300 runners for the 22 km trail, 400 for the 11 km nature run, and 100 for the Nordic walk. Entente Athlétique de Saint-Quentin-en-Yvelines organizes the event with support from the city of Guyancourt.