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Ultra-Trail Mount Yun by UTMB
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MMY 50K

UTMB World Series
48.0km
October 16
Zhangjiajie,
China
utmb·source

· ·

Other races in China

  • November 6, 2026 · 50.0 km
  • November 6, 2026 · 20.0 km
  • November 6, 2026 · 100 km

Read

  • Hill Training for Trail Runners: Train the Descents
  • Downhill Running Muscle Damage: Why Descents Wreck Quads
  • How to Stop Muscle Cramps While Running

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MMY 50K — Race Profile

Distance
48.0 km
Max
1613 m
Min
657 m

About MMY 50K

MMY 50K is a 48.0 km trail race of Ultra-Trail Mount Yun by UTMB 2026 in Zhangjiajie, China. The race starts on October 16, 2026.

Course

By gradient, 44% of the distance is uphill, 35% downhill and 22% flat. The longest climb runs 5.3 km at an average 6.1% grade (319 m of vertical). The longest descent runs 5.7 km at 11.1% (638 m of vertical). The steepest climb averages 42.5% over 0.4 km. The steepest descent drops at 37.5% over 0.3 km. Surface: 69% trail and 7% road.

Poles

Poles bring little benefit here — only about 8.5 km of pole-friendly terrain.

Quad damage

Quad damage risk is moderate (index 30 of 100), with 46% of the load in the first half: 2 descents deserve a plan and a couple of downhill sessions before race day.

  • Control on the marked descents until km 24, target pace until km 38, free after that. Short descents not listed: target pace.
  • #1 · 12.8–18.5 km · 638 m D−, -11.1% · 61% of the race ahead → control
  • #2 · 21.9–24.5 km · 410 m D−, -15.4% · 48% of the race ahead → target pace
  • 30.0–33.8 km · 448 m D−, -11.7% · 28% of the race ahead → target pace
  • 37.6–44.4 km · 737 m D−, -10.8% · 5% of the race ahead → even, first half under control, let go at the end

This page has the interactive elevation profile, gradient matrix, pacing and nutrition planner and weather climatology for MMY 50K.

Other distances of Ultra-Trail Mount Yun by UTMB 2026UMY 100M (161 km)·DMY 100K (100 km)

Other editions of MMY 50K2025

Official websitemountyun.utmb.world