Les 40 Bosses
DEC
5-6
2026
Read all about the Les 40 Bosses on 5-6 Dec 2026 in Saint-Leu-la-Forêt.
5-6 Dec 2026
120 kilometers
75 kilometers
45 kilometers
20 kilometers
10 kilometers
Always double-check with the organizer's website! This page may contain affiliate links.
About the race
The Les 40 Bosses will take place in Saint-Leu-la-Forêt from Saturday 5 December 2026 to Sunday 6 December 2026. You can run between 10 and 120 kilometers. Visit the organization's website for the most recent information.
120 km
Le Monstre
75 km
La Belle
45 km
L'historique
20 km
La Classique
10 km
Le Sprint
