72
km
4,650
D+
2,026
max alt.
FORMATS
Course
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.
Race profile
Grand Duc Trail de Chartreuse is a 72 km trail race with 4,650 m of elevation gain, located in Saint-Pierre-de-Chartreuse, Isère. The next edition is scheduled for 28 June 2026.
The course reaches a maximum altitude of 2,026 m. The race is rated — ITRA points and features terrain. 1 distances are available for runners.
Find all official information on the race website.
LOGISTICS
Logistics and access
- Bib pickup
- Plateau des Petites Roches, devant l'Office de Tourisme
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?
Practical info
OFFICIAL LINKS
Registration links
60 seconds. Built on the ITRA / UTMB / B-Trail databases.
Find an assistant for this race