Grand Duc Trail de Chartreuse
ABOUT
About Grand Duc Trail de Chartreuse
The Grand Duc Trail de Chartreuse is the historic ultra of the Chartreuse range, launched in the late 1980s. Four formats from the 10 km Chouette Trail to the 72 km Ultra cross the technical limestone trails of Grand Som and Chamechaude.
PICK YOUR RACE
The course, estimator and times below adapt to your pick
Current pick: Grand Duc Trail de Chartreuse — Moyen Duc · 47 km · 2,860 m D+
The presentation above is shared across Grand Duc Trail de Chartreuse · the blocks below (course, estimator, results, logistics, weather…) reflect your pick.
BLOCK 2 · COURSE
47 km, 2,860 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.
- ~6h56
Trained runner
Top 10 % of finishers
- ~8h49
Regular runner
Around the median
- ~11h20
Conservative pace
Comfortable margin
BLOCK 4 · DATA & RESULTS
2026 edition — times and roll of honour
Winners, median time, finish rate, distribution. Claim your finish to reveal your full name.
Find your finish time
Search across all historical finishers.
No results yet for Moyen Duc 2026.
Results are added shortly after each edition.
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
Nearest station: Lancey — 6 km from the start. Eco-friendly, no parking hassle.
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.
On site
Shuttles, bibs, parking, lodging
LOGISTICS
Logistics and access
- Bib pickup
- Plateau des Petites Roches, devant l'Office de Tourisme
Weather & conditions
Plan for conditions up to 2,026 m altitude.
Live forecast
Available starting J-14 — 3 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.
Frequently asked questions
What is the distance and elevation of the Grand Duc - Trail de Chartreuse?
The Grand Duc is a 72 km ultra-trail with 4,200 m of elevation gain, starting from Entremont-le-Vieux in Isère. The course crosses the Chartreuse massif with its deep forests and limestone cliffs.
How do I register for the Grand Duc?
Registration is done through the official race website. A medical certificate is required. No specific qualification is imposed, but solid mountain trail experience is recommended.
What is the time limit for the Grand Duc?
The time limit is approximately 16 to 18 hours for the 72 km distance. Intermediate cut-offs are in place at the main aid stations.
What mandatory gear is required for the Grand Duc?
Mandatory gear includes a waterproof jacket, a survival blanket, a headlamp, a whistle, a phone, water and food reserves. The full list is published on the race website.
Can I have a crew or assistant at the Grand Duc?
Yes, assistants are allowed at certain aid stations accessible by car. On goodborning., find a local assistant in Chartreuse who knows the forest roads and course access points.
When does the Grand Duc take place?
The next edition of the Grand Duc is scheduled for June 28, 2026, starting from Entremont-le-Vieux, Isère.
Do you organize this race?