The UTMB Mont-Blanc is the most incredible trail running event! Each year, the best athletes meet in Chamonix and more than 10'000 runners participate in one of the event's 8 races, including the UTMB World Series Finals.
YCC – Wide open to the youth
Challenge dedicated to young people born between 2001 and 2009, composed of 2 events between Courmayeur and Chamonix. Register now.
Discover the races
Push beyond your limits to finish the mythical UTMB race and achieve your dream!
1st September 2023
The most mythical trail race in the world, the UTMB is the final of the UTMB World Series circuit in the 100M category.
Take the start of the little sister of the UTMB by following the trails of the Tour du Mont Blanc between Courmayeur and Chamonix.
1st September 2023
One of the most prestigious races in the world, the CCC is the UTMB World Series Final of the 100K category.
Challenge yourself on this redesigned 55km course and experience a demanding but breathtaking Swiss adventure.
31st August 2023
The ultimate challenge for mid-distance ultra-runners, the OCC is the 50K category final for the UTMB World Series.
The origin of the UTMB World Series
Since its start in Chamonix in 2003, and building on that success ever since, the UTMB Mont-Blanc has grown to be the world's leading trail event and is the inspiration behind the creation of the UTMB World Series circuit, based on the same founding principles: surpassing one's limits, fair play, respect for people and the environment and solidarity.
Starting in 2023, the UTMB Mont-Blanc will host the prestigious UTMB World Series Finals each year, crowning champions on its three iconic races: UTMB, CCC and OCC.
Choose your quest
Join a community of passionate runners around the world. Create your account, get detailed information about your UTMB Mont-Blanc experience and follow your quest to the Mont-Blanc and the UTMB® World Series Finals in Chamonix.
Provide personal assistance along the course at dedicated areas or follow the race from home to share the journey with your favorite runner.
Being a volunteer for the race is an exciting experience which will guarantee an extraordinary adventure. As part of an international event, you will meet people from all over the world and help runners reach the finish line.
Be part of an extraordinary adventure and share incredible emotions! You can contribute to the success of the race.
All you need to know about the race. Access press releases, exclusive content, press kit and apply for an onsite accreditation.
Relive the best moments of the 2022 edition
DISCOVER YOUR STATISTICS AND FOLLOW YOUR QUEST
Create a 'My UTMB' account to access detailed statistics about your past races, consult your UTMB Index, compare your performance against fellow trail runners, check your amount of Running Stones, view your upcoming UTMB World Series Events, and much more.