Course des Hermones is a hilly cross-country race held in Le Lyaud, a village in Haute-Savoie, eastern France. Participants can select a 12.5 km route featuring 340 m of elevation gain or an 8.2 km route with 115 m of climbing. The longer course presents a more challenging day, while the shorter option retains the event's nature-race character with reduced elevation.
The long race begins before the short race, contributing to its nature as a focused local event rather than an all-day festival. Commission Sports Loisirs du Lyaud is the organizer, with the local mairie listed as a contact. This structure lends the race the atmosphere of a village sports club event centered on trail running over undulating terrain.