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Les 40 Bosses

Saint-Leu-la-Forêt, France • 6-7 Dec 2025

The Les 40 Bosses will take place in Saint-Leu-la-Forêt from Saturday 6 December 2025 to Sunday 7 December 2025. You can run between 10 and 120 kilometers. Visit the organization's website for the most recent information.

France Val-d'Oise Île-de-France Saint-Leu-la-Forêt

Race information

Website
UTMB 20K UTMB 50K UTMB 100K UTMB 100M
120 km
120kms
75 km
75kms
45 km
45kms
20 km
20kms
20 km
20kms Nocturne
10 km
10kms
Visit the organization's website for the most recent information.
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