X-Alpine is the 141km ultra trail at Trail Verbier St-Bernard by UTMB 2025 (Verbier, Switzerland). The race starts on July 10, 2025.
Hold a steady pace and save energy for every section.
The course climbs 10400m+. With 74m/km of climbing, the course is exceptionally steep, with long hiking-grade sections. By gradient, 44% of the distance is uphill, 44% downhill and 13% flat. The longest climb runs 17.6km at an average 12.1% grade (2140m of vertical). The longest descent runs 19.9km at an average 10.3% grade (2054m of vertical). The steepest climb averages 49.1% over 0.4km. The steepest descent drops at 48.5% over 0.2km. Surface: 70% trail, 12% technical, 11% road, and 7% smooth. Flat-equivalent effort: 234.1 FlatKM.
The highest summit on the course is Savoleyres (2344m), 12.6km from the start.
Trekking poles are strongly recommended: about 21.3km of the course is steep enough for them to pay off.
Quad damage risk is high (index 75 of 100), with 44% of the load in the first half: 3 critical descents, the last of them run on already damaged legs. Downhill-specific preparation and a controlled early pace pay off here.
On race day, start temperatures have historically ranged from 10°C to 19°C, with around 8°C at the highest point; the chance of precipitation is about 46%.
254 finishers completed the 2025 edition. Men's winner: Beñat Marmissolle (France) in 18:41:47. Women's winner: Céline Finas (France) in 24:43:09.
This page has the full results and splits, a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for X-Alpine.
Other distances of Trail Verbier St-Bernard by UTMB 2025X-Traversee (77.0km)·X-Plore (27.0km)
Other editions of X-Alpine2026
Official websitetvsb.utmb.world