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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

Sat - Sun Jun 27-28

Trail du Bois des Côtes

The Trail du Bois des Côtes will take place in Bailleval from Saturday 27 June 2026 to Sunday 28 June 2026. You can run between 10 and 45 kilometers.

Sunday Jun 28

Trail du Muguet

...

The Trail du Muguet will take place in Meudon on Sunday 28 June 2026. You can run between 10 and 30 kilometers.

Sunday Jun 28

Les Trails de la Plaine

The Les Trails de la Plaine will take place in Noisy-le-Roi on Sunday 28 June 2026. You can run between 11 and 22 kilometers.

Sunday Jun 28

Urban Trail Senlisien

Senlis

5 km

10 km

The Urban Trail Senlisien will take place in Senlis on Sunday 28 June 2026. You can run between 5 and 10 kilometers.