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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

Sunday Aug 30

QBRC - Quelques Bonnes Raisons de Courir

Viroflay

12 km

20 km

The QBRC - Quelques Bonnes Raisons de Courir will take place in Viroflay on Sunday 30 August 2026. You can run between 12 and 20 kilometers.

Sunday Sep 6

Mareuil Run Day

Mareuil-lès-Meaux

8 km

19 km

The Mareuil Run Day will take place in Mareuil-lès-Meaux on Sunday 6 September 2026. You can run between 8 and 19 kilometers.

Sunday Sep 6

La Monthyonnaise

Monthyon

14 km

The La Monthyonnaise will take place in Monthyon on Sunday 6 September 2026. You can run 14 kilometers.

Sunday Sep 6

La Nanteuillaise

...

The La Nanteuillaise will take place in Nanteuil-le-Haudouin on Sunday 6 September 2026. You can run between 5 and 21 kilometers.