Lactecotrail is a trail running event in Biscarrosse, Landes department, southwest France. The main race begins and ends at Base nautique Latécoère, situated by Lac de Biscarrosse-Parentis. The event offers a 17 km trail run, a 10 km walk or hike, and a 9 km discovery trail. The 17 km route ascends approximately 255 m, and the discovery route gains about 150 m.
The 17 km course follows the lakeside base, heading toward Petit Lac de Biscarrosse via the coastal canal. It then transitions to paths and single tracks within the Landes pine forest before circling back by the Petit Lac to finish at Base Latécoère. The race is limited to 500 participants, with a refreshment station located around the 13.5 km mark. This course is suitable for runners seeking a fast time and for trail enthusiasts desiring a brief, diverse route combining forest and lake. Biscarrosse Olympique Athlétisme is the organizer.