TRAIL75K45K20KUTMB World Series
Trail Les 40 Bosses
Saint-Leu-la-Forêt, FranceChoose the distanceTap a distance: the course, fees, times and rules below update for that race.
Mountainous
At a glance
Trail Les 40 Bosses 2026 takes place on 5 December 2026 – 6 December 2026 in Saint-Leu-la-Forêt, France. Distances: 120 km, 75 km, 45 km, 20 km, 10 km. First start at 08:30.
- Date
- Saturday, 5 December 2026 – Sunday, 6 December 2026
- Location
- Saint-Leu-la-Forêt, France
- Distances
- 120 km · Competitive
- 75 km · Competitive
- 45 km · Competitive
- 20 km · Competitive
- 10 km · Competitive
- Start times
- 120 km 16:30 · 75 km 16:30 · 45 km 08:30 · 20 km 10:00 · 10 km 14:00
- Finishers at the last edition
- 45 km about 300 · 20 km about 400
- Official website
- les40bosses.fr ↗
- Series
- UTMB World Series
- Status
- To be confirmed
Last updated: 19 October 2026