La Buissonnière is a nature race held annually in Verrières-le-Buisson, organized by the Trait d'Union de Verrières-le-Buisson. It accommodates various runners with 5 km, 10 km, and 20 km distances, alongside youth races for children aged 6 and up, and a 5 km walk.
The main 20 km race consists of two laps of the 10 km circuit, offering participants a choice between a short run, a standard road-race distance, or a longer endurance event. The event caters to families, featuring races for children, a walk for non-competitors, childcare for ages 3 to 5, and a cloakroom available from the morning. Bibs can be picked up at the Mermoz gymnasium on Saturday or just before the race, with organizers encouraging Saturday collection.