Trail des Boucles de la Seine
ABOUT
About Trail des Boucles de la Seine
Trail along the chalk cliffs of the Seine bends in Normandy. Château Gaillard, beech forests and panoramas over the river meanders.
BLOCK 2 · COURSE
42 km, 800 m climb
Course map, elevation profile, notable segments, aid stations and cutoffs.
BLOCK 3 · ESTIMATOR
Your real finish time
Link your data or your ITRA, we calibrate against the historical peloton.
What's your real finish time?
Link Strava, Coros, Garmin or Suunto — or use your ITRA. We compare your profile to thousands of finishers and compute your time with confidence interval.
Ballpark by profile. Compute yours in 2 min.
- ~4h35
Trained runner
Top 10 % of finishers
- ~5h50
Regular runner
Around the median
- ~7h30
Conservative pace
Comfortable margin
BLOCK 5 · LOGISTICS
Pre-race essentials
How to get there (train, carpool), bib pickup, mandatory gear, and everything you need to know on-site.
How to get there
Pick your way in
Come by train
Get to the race by train
Type your nearest station — we'll send you to SNCF Connect.
Dates on SNCF Connect must be re-selected on the next page (their URL doesn't yet carry them).
Carpool
Share the ride with other runners
Soon: a per-race carpool thread with direct runner-to-runner listings. In the meantime, check BlaBlaCar or local Facebook groups.
Weather & conditions
Plan for conditions up to 150 m altitude.
Live forecast
Available starting J-14 — 115 days to go.
BLOCK 8 · COMMUNITY
From finishers, for finishers
Ratings, race reports, photos, Q&A. What you won't read on the official site.
Do you organize this race?
18 October 2026
J-129