A nocturnal urban trail of 20 to 25 km, composed of 80% paths and pedestrian streets. This course will take you to the Colline aux Oiseaux, passing through the University, the Castle, and the banks of the Orne. An intense race in the middle of the night, a challenge to be taken on solo, in a group, or as a company. The number of places is limited to 3000 participants. The event features 250m of elevation gain and 800 steps.