The UTMB® course is a complete loop around the Mont-White massif across three countries. Here is the route of the flagship race, its iconic checkpoints, and everything you need to know about distances, timings, and aid stations.
The route: a loop of Mont-White across 3 countries
The UTMB® covers 174 km and approximately 9,900 m of elevation gain for the 2026 edition, figures subject to minor adjustments year to year based on trail conditions. The start and finish are in Chamonix. The race runs anti-clockwise around the massif, passing through France, Italy, and Switzerland in turn.
Leaving Chamonix, the route heads through Les Houches and Saint-Gervais, before climbing towards Les Contamines and the Col du Bonhomme, then crossing the Col de la Seigne—the natural border with Italy. Runners then reach Courmayeur, an iconic checkpoint and the first life base of the race. The route climbs again towards the Grand Col Ferret into Switzerland, stopping at Champex-Lac, the second life base, before descending towards Trient and Vallorcine to re-enter France for the finish in Chamonix.
The highest point on the course is the Grand Col Ferret, at 2,584 metres. The official route, GPX file, and detailed elevation profile are available on the official race website.
The different race formats available
The UTMB® is more than a single race: the organisation offers multiple formats around the same massif, from shorter courses to epic ultras, catering to all experience levels. Full details for each distance (CCC, TDS, OCC, PTL, MCC...) are available in our dedicated article: UTMB®: the race and distances.
Time limits and cut-off times
Each race format features an overall cut-off time to be classified as an official finisher, alongside intermediate cut-off times at designated checkpoints. Find all the detailed time limits in our article: UTMB® time limits and cut-off times.
Aid stations
The route features various types of aid stations, all clearly listed in the runner's guide provided to every participant. Full details for each station, including food menus and declared allergens, can be found in our article: UTMB® aid stations.
FAQ
What is the UTMB® route?
The UTMB® is a loop around the Mont-White massif starting and finishing in Chamonix, covering approximately 174 km and 9,900 m of elevation gain through France, Italy (Courmayeur), and Switzerland (Champex-Lac).
What is the highest point of the UTMB®?
The Grand Col Ferret at 2,584 metres, reached when crossing from Italy into Switzerland.
What are the different UTMB® race distances?
Alongside the historic 174 km route, the organisation offers several shorter formats (CCC, TDS, OCC, MCC) as well as the PTL, a non-timed team challenge. Full details are available in our article on UTMB® race distances.
