Trail du Bois Louis is an evening trail race in Aulnoy. The 5 km, 10 km, and 21 km races start together at 7 PM. The 5 km race, with 70 meters of elevation gain, is intended for new trail runners. The 10 km race, climbing 120 meters, is suitable for regular runners, while the 21 km race offers 200 meters of elevation gain for stronger runners.
The event features a free children's race at 6 PM and a non-timed 10 km Rando Marche for walkers. The organizer acknowledged the support of the Aulnoy town hall, recalled a past edition that was very hot, and confirmed the course is being prepared with ample singletrack trails.