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Les 40 Bosses

Name: Les 40 Bosses
Start: 2026-12-05
End: 2026-12-06
Location: Saint-Leu-la-Forêt

Saint-Leu-la-Forêt, France • 5-6 Dec 2026

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.

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

Race information

Website

120 km

Le Monstre

75 km

La Belle

45 km

L'historique

20 km

La Classique

10 km

Le Sprint

Visit the organization's website for the most recent information.

Trail runs nearby

Saturday Jun 6

Foulées de l'Ardente

The Foulées de l'Ardente will take place in Vineuil-Saint-Firmin on Saturday 6 June 2026. You can run between 5 and 18 kilometers.

Sat - Sun Jun 6-7

La Dagovéranienne

The La Dagovéranienne will take place in Ville-d'Avray from Saturday 6 June 2026 to Sunday 7 June 2026. You can run between 10 and 20 kilometers.

Saturday Jun 6

Trail de la Colline d'Élancourt

...

The Trail de la Colline d'Élancourt will take place in Élancourt on Saturday 6 June 2026. You can run between 5 and 15 kilometers.

Sunday Jun 7

Les Foulées d'Orgerus

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The Les Foulées d'Orgerus will take place in Orgerus on Sunday 7 June 2026. You can run between 10 and 21 kilometers.