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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

UTMB 20K UTMB 50K UTMB 100K UTMB 100M

Les 40 Bosses - 120 Km

Les 40 Bosses - 20km

Les 40 Bosses - 45km

Les 40 Bosses - 75 Km

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

Trail runs nearby

Sat - Sun Mar 14-15

Trail d'Auffargis

The Trail d'Auffargis will take place in Auffargis from Saturday 14 March 2026 to Sunday 15 March 2026. You can run between 15 and 45 kilometers.

Sunday Mar 15

Rev7 Trail - Menucourt

The Rev7 Trail - Menucourt will take place in Menucourt on Sunday 15 March 2026. You can run between 8 and 20 kilometers.

Saturday Mar 28

Évry-Courcouronnes Urban Trail

Évry-Courcouronnes

Urban Trail

The Évry-Courcouronnes Urban Trail will take place in Évry-Courcouronnes on Saturday 28 March 2026.

Saturday Mar 28

Trail du Château d'Ecouen

The Trail du Château d'Ecouen will take place in Écouen on Saturday 28 March 2026. You can run between 10 and 20 kilometers.