MMY 50K is the 48.0km trail race at Ultra-Trail Mount Yun by UTMB 2026 (Zhonghe Square, Mount Yun, Linfen, Shanxi, China). The race starts on October 17, 2026 at 08:00 AM. It starts and finishes in Zhonghe Square, Mount Yun, Linfen, Shanxi. The time limit is 14 h.
Race strategy
Hold a steady pace and save energy for every section.
- 639m descent. Go easy, save your quads.
- Steep 33% wall. Control your pace and stay focused.
- Final 786m 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 24.9km, then run your race pace, and start the final descent from 38.0km under control, then go all out near the bottom.
- Start · 0.0km–1.5km · Race-day nerves push your heart rate up: don't follow the crowd, find your own rhythm.
- Settle in · 1.5km–13.3km · Climb of 970m, high point 1613m. Ease in: hold back more than feels necessary. The race is still ahead. Climb by heart rate or breathing, not pace.
- Work · 13.3km–24.9km · Descent of 639m averaging 11%, descent of 414m averaging 16%. Plus 1 more climb. 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. Hike the steepest pitches.
- Fade · 24.9km–38.0km · Plus 2 more climbs and 1 descent. Your energy fades, and that's normal: hold a steady effort and stop counting the miles. Climb by heart rate or breathing, not pace. Hike the steepest pitches. Your heart rate drifts down on its own: don't chase your early-race numbers, go by feel.
- Home · 38.0km–47.4km · Descent of 786m averaging 8%. 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. Hike the steepest pitches.
Course
The course climbs 2410m+ and descends 2403m−. With 50m/km of climbing, this is a true mountain course with sustained climbs and descents. By gradient, 42% of the distance is uphill, 35% downhill and 23% flat. The longest climb runs 13.3km at an average 7.3% grade (970m of vertical). The longest descent runs 9.4km at an average 8.4% grade (786m of vertical). The steepest climb averages 34.8% over 0.3km. The steepest descent drops at 38.1% over 0.3km. Surface: 72% trail and 16% road. Flat-equivalent effort: 67.0 FlatKM.
Poles
Poles bring little benefit here: only about 8.8km of pole-friendly terrain.
Quad damage
Quad damage risk is moderate (index 31 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 your HR on the first mountain, save your quads on the descents until 24.9km, then run your race pace, and start the final descent from 38.0km under control, then go all out near the bottom.
- #1 · 13.3–18.9 km · 639 m D−, -11.3% · 28.5 km ahead → control
- #2 · 22.4–24.9 km · 414 m D−, -16.0% · 22.5 km ahead → control
- 32.4–34.3 km · 345 m D−, -18.9% · 13.2 km ahead → your pace
- 38.0–47.4 km · 786 m D−, -8.4% · 0.0 km ahead → even, first half under control, let go at the end
Weather
On race day, start temperatures have historically ranged from 7°C to 15°C, with around 10°C at the highest point; the chance of precipitation is about 45%. Heavy rain of 10.0mm or more falls on about 29% of days around this date.
Results
1,278 finishers completed the 2026 edition. Men's winner: Shichu Zhier (China) in 4:23:08. Women's winner: Jiayi Fu (China) in 4:57:18.
This page has the full results and splits, a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for MMY 50K.
Other distances of Ultra-Trail Mount Yun by UTMB 2026UMY 100M (166km)·DMY 100K (97.0km)
Other editions of MMY 50K2025
Official websitemount-yun.utmb.world
