La ChaumonTrail is an evening trail event held in La Roche-Mabile, Orne, Normandy. It provides two short off-road routes: a 13 km race commencing at 20:00 and a 7 km race starting at 20:30. Both are presented as discovery-style trail runs, not formal ranked competitions.
The longer course ascends approximately 420 to 430 meters, a significant climb for 13 km. The 7 km route includes 220 meters of climbing, meaning even the shorter option involves elevation gain. Entry costs 10 EUR for either distance, with aid stations and changing rooms available. The Association de la Motte Fortifiée organizes the event, lending it the character of a local trail night rather than a major competition focused on results.