UMY 100M

Race strategy

Hold a steady pace and save energy for every section.

• 683m descent. Go easy, save your quads.
• Steep 41% wall. Control your pace and stay focused.
• Final 785m descent. Save your legs to go all out on it.
• Long race. Control your HR and effort. Early mistakes cost the most.
• Go easy on the first downhill, save your quads on the descents until 87.5km, then run your race pace, and start the final descent from 149km under control, then go all out near the bottom.
• Start · 0.0km–1.2km · Race-day nerves push your heart rate up: don't follow the crowd, find your own rhythm.
• Settle in · 1.2km–17.6km · Climb of 895m. Plus 1 more descent. Ease in: hold back more than feels necessary. The race is still ahead. Climb by heart rate or breathing, not pace.
• Work · 17.6km–80.8km · Descent of 683m averaging 9%, descent of 338m averaging 9%. Plus 2 more climbs. 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. Running pays off here: run wherever you can.
• Fade · 80.8km–149km · Descent of 438m averaging 7%, climb of 837m, descent of 499m averaging 5%, high point 1649m. 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. This descent is hard on the legs: short steps, stay in control, poles if you have them. Running pays off here: run wherever you can. Hike the steepest pitches. Your heart rate drifts down on its own: don't chase your early-race numbers, go by feel.
• Home · 149km–159km · Descent of 785m 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

By gradient, 38% of the distance is uphill, 36% downhill and 26% flat. The longest climb runs 13.1km at an average 6.4% grade (837m of vertical). The longest descent runs 9.5km at an average 5.2% grade (499m of vertical). The steepest climb averages 31.4% over 0.4km. The steepest descent drops at 40.6% over 0.4km. Surface: 40% trail and 9% road. Flat-equivalent effort: 215.5 FlatKM.

Poles

Poles bring little benefit here: only about 18.4km of pole-friendly terrain.

Quad damage

Quad damage risk is high (index 63 of 100), with 49% 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.

• Go easy on the first downhill, save your quads on the descents until 87.5km, then run your race pace, and start the final descent from 149km under control, then go all out near the bottom.
• #1 · 31.5–38.9 km · 683 m D−, -9.2% · 119.6 km ahead → control
• #2 · 61.4–65.3 km · 338 m D−, -8.8% · 93.2 km ahead → control
• #3 · 80.8–87.5 km · 438 m D−, -6.6% · 71.0 km ahead → control
• 100.6–110.1 km · 499 m D−, -5.2% · 48.4 km ahead → your pace
• 149.1–158.5 km · 785 m D−, -8.4% · 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 8°C to 15°C, with around 3°C at the highest point; the chance of precipitation is about 26%.

Results

636 finishers completed the 2025 edition. Men's winner: Jiaju Zhao (China) in 17:51:36. Women's winner: Ronghua Deng (China) in 21:58:48.