Le Noct'Trail du Calvaire is a night trail race in Urcel, a village in Aisne in the Hauts-de-France region of northern France. The main event starts from the school park after dark. The headline race is 12 km on 100% trail, with 250 m of climbing. Runners can enter solo or as a two-person relay-style pair over 6 km each. A Cani-Trail option is available for runners with a dog, alongside youth races over 800 m, 1.5 km, and 3 km before the main start.
The route starts and finishes at the village school park, with parking available around the park and along the village street. The 12 km race has a two-hour limit and a checkpoint at 9 km, indicating it is challenging. Bibs are collected at the stand in the school park no later than 30 minutes before racing; on-site registration is not permitted. The organizer is Familles rurales d'Urcel, and the race embraces its name with the question, "Real pleasure or real ordeal?"