Les 3 Sentiers is a trail-running event in Montalivet, on France's Atlantic coast in the Médoc. It is typically held in August, with some editions scheduled for late July. The event offers runners two main options: a 6 km course and a 15 km course. The name reflects the race design, as the day focuses on varied terrain rather than a single road loop.
The routes incorporate forest paths, roads, sand, beach, seafront sections, and town segments, requiring runners to adapt their pace to the changing surfaces. The 6 km course suits those seeking a shorter challenge, while the 15 km course presents the main test. Separate races are organized for children and juniors, making it a family event. The location is Vendays-Montalivet, featuring the ocean, pine forests, beaches, and nearby Médoc vineyards.