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Trail Verbier St-Bernard by UTMB
141km14177km7727km27

X-Alpine

UTMB World Series
141.0km·10400m+
July 10
Verbier,
Switzerland
utmb·source

Race Pace Calculator · GPX Analyzer · Trail Finder

Other races: Switzerland

Read

  • Types of Runs and What Each Workout Actually Trains
  • Hill Training for Trail Runners: Train the Descents
  • Downhill Running Muscle Damage: Why Descents Wreck Quads

Full calendar: Switzerland

X-Alpine · Race profile

Distance
141km
Gain
10400m+
FlatKM
234.1
Max
2815m
Min
717m

About X-Alpine

X-Alpine is the 141km ultra trail at Trail Verbier St-Bernard by UTMB 2025 (Verbier, Switzerland). The race starts on July 10, 2025.

Race strategy

Hold a steady pace and save energy for every section.

  • 2054m descent. Go easy, save your quads.
  • Big early climb with 2.1km gain. Control your HR at altitude.
  • Final 820m descent. Save your legs to go all out on it.
  • Long race. Control your HR and effort. Early mistakes cost the most.
  • Control your HR on the first mountain, save your quads on the descents until 84.1km, then run your race pace, and start the final descent from 130km under control, then go all out near the bottom.
  • Start · 0.0km–1.3km · Race-day nerves push your heart rate up: don't follow the crowd, find your own rhythm.
  • Settle in · 1.3km–27.6km · Climb of 1026m, descent of 2054m averaging 10%. Ease in: hold back more than feels necessary. The race is still ahead. Climb by heart rate or breathing, not pace. This descent is hard on the legs: short steps, stay in control, poles if you have them. Hike the steepest pitches.
  • Work · 27.6km–69.7km · Climb of 2140m, high point 2817m, descent of 1509m averaging 20%, climb of 1555m. This is where the race is built: steady, solid effort. Climb by heart rate or breathing, not pace. This descent is hard on the legs: short steps, stay in control, poles if you have them. At altitude your pace drops, and that's fine. Hike the steepest pitches.
  • Fade · 69.7km–130km · Descent of 1393m averaging 10%, climb of 1022m, climb of 1180m. Plus 1 more climb and 2 descents. Your energy fades, and that's normal: hold a steady effort and stop counting the miles. Climb by heart rate or breathing, not pace. This descent is hard on the legs: short steps, stay in control, poles if you have them. At altitude your pace drops, and that's fine. Hike the steepest pitches. Your heart rate drifts down on its own: don't chase your early-race numbers, go by feel.
  • Home · 130km–137km · Descent of 820m averaging 12%. No heroics: settle back into your own effort and hold it to the line. Very long descent: first half under control, then even, let go only near the end.

Course

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.

Summits

The highest summit on the course is Savoleyres (2344m), 12.6km from the start.

Poles

Trekking poles are strongly recommended: about 21.3km of the course is steep enough for them to pay off.

Quad damage

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.

  • Control your HR on the first mountain, save your quads on the descents until 84.1km, then run your race pace, and start the final descent from 130km under control, then go all out near the bottom.
  • #1 · 7.7–27.6 km · 2054 m D−, -10.3% · 108.9 km ahead → control
  • #2 · 45.2–52.9 km · 1509 m D−, -19.8% · 83.7 km ahead → control
  • #3 · 69.7–84.1 km · 1393 m D−, -9.6% · 52.4 km ahead → control
  • 109.9–124.3 km · 1856 m D−, -12.9% · 12.2 km ahead → your pace
  • 129.9–136.5 km · 820 m D−, -12.3% · 0.0 km ahead → even, first half under control, let go at the end
  • Plus 1 more notable descent not listed: your pace.

Weather

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%.

Results

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