La Oisselienne is a race series in Oisseau, Mayenne, western France, typically held in early October. It includes short distances of 1 km, 2 km, 3 km, and 5 km, alongside a 10 km trail race for those seeking the main distance.
All races begin in Oisseau, with the 10 km trail being the most popular. The event is listed on TrainerDay, providing practical information like distance options, start location, registration, bibs, and results for participants planning their race.