UTMB Mont-Blanc
Chamonix, Haute-Savoie
171
km
10,000
D+
2,537
max alt.
6
ITRA pts
Available distances
Course
The Ultra-Trail du Mont-Blanc is the iconic trail race worldwide. 171 km around the Mont-Blanc massif, crossing France, Italy and Switzerland, with 10,000m of elevation gain. An absolute challenge in the heart of the Alps.
Race profile
UTMB Mont-Blanc is a 171 km trail race with 10,000 m of elevation gain, located in Chamonix, Haute-Savoie. The next edition is scheduled for 28 August 2026.
The course reaches a maximum altitude of 2,537 m. The race is rated 6 ITRA points and features Montagne, Alpin terrain. 5 distances are available for runners.
Approximately 2,300 runners cross the finish line each year. Find all official information on the race website.
Frequently asked questions
How long is the UTMB?
The UTMB is 171 km (106 miles) with 10,000 m of elevation gain, circling the Mont-Blanc massif through France, Italy and Switzerland.
How do I register for the UTMB?
Registration is through a lottery system on the official website utmbmontblanc.com. You need to accumulate enough Running Stones (qualification points) from qualifying races.
What is the UTMB time limit?
The UTMB cutoff time is 46h30. Intermediate cutoffs are enforced at each aid station along the course.
What ITRA index do I need for the UTMB?
There is no minimum ITRA index requirement, but runners typically have a PI between 550 and 900. A PI of 600+ is recommended for good chances of finishing.
When does the UTMB take place?
The UTMB takes place in late August each year, during the UTMB Mont-Blanc week which also includes the CCC, TDS, OCC and MCC races.
Can I have a crew/pacer at the UTMB?
Yes, crew members are allowed at designated aid stations. They can provide gear, food and moral support. goodborning helps you find a local assistant.