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Les 40 Bosses

Name: Les 40 Bosses
Start: 2025-12-06
End: 2025-12-07
Location: Saint-Leu-la-Forêt

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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9 km

17 km

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Choco Trail d'Hardricourt

...

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