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

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

Race information

Website

Les 40 Bosses - 75 Km

Les 40 Bosses - 45km

Les 40 Bosses - 20km

Les 40 Bosses - 120 Km

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

Trail runs nearby

Saturday May 23

Course Solidaire Auxilium

The Course Solidaire Auxilium will take place in Draveil on Saturday 23 May 2026. You can run between 5 and 10 kilometers.

Sunday May 24

Foulées d'Osny

...

The Foulées d'Osny will take place in Yvelines on Sunday 24 May 2026. You can run between 5 and 21 kilometers.

Sunday May 24

Trail de l'Orangerie de Bonnelles

The Trail de l'Orangerie de Bonnelles will take place in Bonnelles on Sunday 24 May 2026. You can run between 10 and 43 kilometers.

Saturday May 30

La Boucle Festival

Soisy-sous-Montmorency

Backyard Ultra

2 km

The La Boucle Festival will take place in Soisy-sous-Montmorency on Saturday 30 May 2026.