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Les 40 Bosses

Saint-Leu-la-Forêt, France • 6-7 Dec 2025

The Les 40 Bosses will take place in Saint-Leu-la-Forêt from Saturday 6 December 2025 to Sunday 7 December 2025. You can run between 20 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
UTMB 20K UTMB 50K UTMB 100K UTMB 100M
120 km
5500 m+
Les 40 Bosses - 120 Km
75 km
3300 m+
Les 40 Bosses - 75 Km
45 km
2100 m+
Les 40 Bosses - 45km
20 km
900 m+
Les 40 Bosses - 20 Km Nocturne
20 km
900 m+
Les 40 Bosses - 20km
Visit the organization's website for the most recent information.
Trail runs nearby

Les 24h de St Brice

Saint-Brice-sous-Forêt - 8 km from Saint-Leu-la-Forêt

The Les 24h de St Brice will take place in Saint-Brice-sous-Forêt on Saturday 7 June 2025. You can run between 3 and 24 hours.

Foulées de l'Ardente

Vineuil-Saint-Firmin - 27 km from Saint-Leu-la-Forêt

The Foulées de l'Ardente will take place in Vineuil-Saint-Firmin on Saturday 7 June 2025. You can run between 5 and 15 kilometers.

Foulées de la Rue

Beauvais - 47 km from Saint-Leu-la-Forêt

The Foulées de la Rue will take place in Beauvais on Saturday 7 June 2025. You can run between 5 and 10 kilometers.

Trail de l'Orangerie de Bonnelles

Bonnelles - 47 km from Saint-Leu-la-Forêt

The Trail de l'Orangerie de Bonnelles will take place in Bonnelles on Sunday 8 June 2025. You can run between 10 and 39 kilometers.

Les Foulées de Boissy-Fresnoy

Boissy-Fresnoy - 48 km from Saint-Leu-la-Forêt

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The Les Foulées de Boissy-Fresnoy will take place in Boissy-Fresnoy on Sunday 8 June 2025. You can run between 5 and 20 kilometers.

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Bresles - 43 km from Saint-Leu-la-Forêt

The La Bresl'Oise will take place in Bresles on Saturday 14 June 2025. You can run between 10 and 24 kilometers.