Trail Les 40 Bosses
Trail Les 40 Bosses is listed for December 5, 2026 in France. Listed distances: 10K, Trail 120 km, Trail 75 km, Trail 45 km. Confirm the date, registration and travel details with the official organizer before you book.
About this race
Trail Les 40 Bosses is listed by Finishers for ultra marathon, 10K on 2026-12-05 in Saint-Leu-la-Forêt, Île-de-France Region, France. Confirm current race details with the linked registration or source page.
Key facts
- Date
- December 5, 2026
- Location
- France
- Events
- 10K, Trail 120 km, Trail 75 km, Trail 45 km
- Surface
- Trail
- Official source
- Registration page & official site
- Listing status
- Verified · updated May 22, 2026
Before you register
- 1Confirm the race-day schedule
Verify the December 5, 2026 start times, packet pickup (collecting your race bib) and corral (your assigned start group) instructions on the official source before booking travel.
- 2Pin the exact start area
Use France as the planning region, then confirm the precise start, finish, parking and transport with the organizer.
- 3Pick your distance
Listed options are 10K, Trail 120 km, Trail 75 km, Trail 45 km. Check the source for current per-distance availability and limits.
- 4Review entry terms
Read entry rules, refund terms, participant limits and transfer rules before you pay.
Runner reviews
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