This year, the departure of the night trail will be given at Courcelles-sur-Yvette. The thirteen kilometer trail will be specially illuminated for the occasion and will end at the Diagonale Eiffel! On the way out of this nocturnal experience, a 35 kilometer Mountain Bike section and a 6 km trail will take you to the splendid Complexe Omnisport intercommunal des Etangs de la ville du Perray-en-Yvelines.
