Trail Les 40 Bosses 2025
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- Next event : Early December 2025
A distance for every taste
86 km
43 km
20 kmTOP
10 km
- Early December 2025
- Elevation gain : 900mD+
- 400+ runners in the last edition
Trail 10 km
Trail- Early December 2025
- Elevation gain : 400mD+
More races await you
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Made in France, between Lyon and Nantes
Made in France, between Lyon and Nantes