UTMB 2025 route in gpx – Ultra Trail du mont blanc

The UTMB 2025 route is a real adventure around Mont-Blanc.

Start in Chamonix at 5:45pm. What awaits you: 174 kilometers and 9,900 meters of ascent, with sections in France, Italy and Switzerland. This year, there’s been a change due to rockfalls between Chamonix and Les Houches. The first section is therefore a little different from the 2024 route, but the atmosphere remains the same.

The first few kilometers pass through the lively streets of Chamonix, before heading rapidly towards Les Houches. Then it’s on to the classics: Saint-Gervais bathed in light, the climb to Les Contamines, then the mythical passage to La Balme. After a long descent, Les Chapieux marks the beginning of the night for many. In the morning, we cross the border: Lac Combal, Checrouit, arrival in Courmayeur, always impressive with the Italian welcome. Then the climb to the Bertone refuge tests the legs. Arriving at Arnouvaz, then over the Col Ferret, it already smells of Switzerland. La Fouly, then Champex-Lac are stages where the mind has to stay strong. A few more passes: Plan de l’Au, Trient, and the fatigue builds up. The final stretch passes through Vallorcine. When we finally get down to Chamonix, the finishing arch has never been so much to look forward to.

To do the UTMB is to experience highs and lows, to share a stretch of road with other runners, to go from heat to snow, to cross three countries and as many crazy atmospheres. No matter how long it takes, finishing this tour is a memory for life.

Want to find out more? Discover the results of utmb 2024