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The Ultra Trail du Mont Blanc - UTMB

Ultra Trail du Mont Blanc - Poster 2023

The Ultra Trail du Mont Blanc, also known as the UTMB is the most expected trail-running event for trail-runners from all over the world.

Each year, at the end of August, the elite of the trail-running world, almost 8000 runners, come to Chamonix Mont-Blanc to participate in one of the event's races.

The UTMB crosses three countries: France, Italy and Switzerland.

This year, the Ultra Trail du Mont Blanc is to take place from 28 August to 3 September 2023. So, rendez-vous in Chamonix, to experience the adventure of this mountain Ultra Marathon!

Ultra Trail du Mont Blanc 2023 Are you ready to live your dream?

The Ultra Trail of the Mont Blanc starts in Chamonix, on the French side of Mont-Blanc. This part of the circuit is the friendliest: beautiful valleys, forest paths, mellow curves and an incomparable flora.

Then, a balcony-style path unveils the Italian side. This part of the trail is bordered by a fierce and dark rock face, bristling with peaks. After the Italian Val Ferret, the Swiss Val Ferret offers a return to a friendlier view of the mountains.

The Mont-Blanc area, a unique and genuine region, invites you, in the course of this hike, to discovery its varied and majestic scenery. You will be astonished with the impressive massif of the Mont-Blanc, omnipresent in front of your gaze throughout the circuit.

Committing oneself, to running around Mont-Blanc, is above all to experience an internal adventure, an unique experience where each participant will have to draw from their strengths and push their mental and physical limits in order to cross the finishing line.

This extraordinary trip at the heart of the massif will permit trail-runners to cross through seven valleys, over 71 glaciers and 400 summits, in an alpine décor which is unique in the world.

Many concerts and festivals will take place in the town of Chamonix! Check the 2023 Agenda

The Competitions of the Ultra Trail du Mont Blanc (UTMB)

Four individual races

  • The UTMB (Ultra Trail du Mont Blanc): around 171 km with about 10,000 metres of height gain, starts from Chamonix, in semi-autonomy and in 46:30 hours maximum.
  • The CCC (Courmayeur-Champex-Chamonix): around 101 km with about 6,100 metres height gain, starts from Courmayeur, in semi-autonomy and in 26:30 hours maximum.
  • The TDS (Sur les Traces des Ducs de Savoie): around 145 km with about 9,100 metres height gain, starts from Courmayeur, in semi-autonomy and in 44:00 hours maximum.
  • The OCC (Orsières-Champex-Chamonix):  around 56 km for about 3,500 metres of height gain, starts from Orsières, in semi-autonomy within a maximum of 14:30 hours.

A race for teams

  • The PTL (La Petite Trotte à Léon): this event is appreciably different from the 4 other events and has its own regulations.
  • The MCC (From Martigny-Combe to Chamonix) around 40 km for about 2300 metres of height gain, starts from Martigny-Combe, in semi-autonomy and in  10 hours max.

Races dedicated to young people

  • The YCC (Youth Chamonix Courmayeur) :  a sporting challenge for the young aged 16 – 22 years, born between 1999 and 2007, consisting of a prologue in Chamonix on Tuesday of the event week, at the end of the afternoon, and a 5 to 15 km race (depending on the category) in Courmayeur the following day. Around 300 runners. This race has its own regulations.
  • The ETC : around 15km and about 1300 meters elevation gain, starts from Courmayeur, in semi-autonomy. Cut-off time for finishing is 4 hrs. The race is reserved for runners 23 years and older. 
  • The MINI UTMB for children 3-13 years of age. 

How to choose your race, more info click here.

Useful pages

To volunteer your assistance with race management, check here
For the rules of the UTMB, check here
For the 2023 registrations, check here
For transports, check here
For accomodation, check here
For supporters, check here

More Information

Even if you are not a racer, come and cheer on these courageous athletes.

For up to the minute info, please visit the official Ultra Trail du Mont Blanc (UTMB) website :