5
December 2026
Saturday
Running· France
Trail Les 40 Bosses
Starts in 31 days
Key facts
- Longest distance
- 120 km
About this event
Trail Les 40 Bosses is a running event in France, held on Saturday, 5 December 2026 — a weekend event in winter. The longest distance is 120 km (an ultra distance).
Entry & registration
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Location
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