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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 - 120 Km

Les 40 Bosses - 75 Km

Les 40 Bosses - 45km

Les 40 Bosses - 20km

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

Trail runs nearby

Friday May 1

Trail Challenge 78

Moisson

The Trail Challenge 78 will take place in Moisson on Friday 1 May 2026.

Friday May 1

Course du Muguet - Pontoise

Pontoise

5 km

10 km

The Course du Muguet - Pontoise will take place in Pontoise on Friday 1 May 2026. You can run between 5 and 10 kilometers.

Friday May 1

Trail des Portes du Vexin

...

The Trail des Portes du Vexin will take place in Issou on Friday 1 May 2026. You can run between 7 and 38 kilometers.

Sunday May 3

Au Pas de Course Contre le Cancer

...

The Au Pas de Course Contre le Cancer will take place in Champs-sur-Marne on Sunday 3 May 2026. You can run between 5 and 10 kilometers.