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Nike ACG 2025 Ultra-Trail Chongli
171.92km171.92104.02km104.0272km7251km5128km28

Chongli 168

171.9km·8017m+
July 11
Chongli,
China
itra·source

Race Pace Calculator · GPX Analyzer · Trail Finder

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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

100-mile trail race calendar

Chongli 168 · Race profile

Distance
172km
Gain
8017m+
FlatKM
255.4
Max
2124m
Min
1255m

About Chongli 168

Chongli 168 is the 172km ultra trail at Nike ACG 2025 Ultra-Trail Chongli 2025 (Chongli, China). The race starts on July 11, 2025.

Race strategy

Hold a steady pace and save energy for every section.

  • Steep 29% wall. Control your pace and stay focused.
  • 637m descent. Go easy, save your quads.
  • The finish is runnable. Save your legs to run it all the way.
  • 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 118km, then run your race pace.
  • Start · 0.0km–1.1km · Race-day nerves push your heart rate up: don't follow the crowd, find your own rhythm.
  • Settle in · 1.1km–9.9km · Descent of 330m averaging 10%. Plus 1 more climb. 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.
  • Work · 9.9km–87.1km · Descent of 517m averaging 9%, descent of 637m averaging 9%, descent of 889m averaging 6%. Plus 6 more climbs and 3 descents. 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 · 87.1km–163km · Descent of 735m averaging 7%. Plus 3 more climbs and 4 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. 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 · 163km–170km · 6.7km of runnable trail. No heroics: settle back into your own effort and hold it to the line. Running pays off here: run wherever you can.

Course

The course climbs 8017m+. With 47m/km of climbing, this is a true mountain course with sustained climbs and descents. By gradient, 39% of the distance is uphill, 43% downhill and 17% flat. The longest climb runs 9.6km at an average 4.9% grade (469m of vertical). The longest descent runs 16.5km at an average 7.0% grade (1152m of vertical). The steepest climb averages 40.6% over 0.2km. The steepest descent drops at 28.8% over 0.5km. Surface: 24% road, 23% smooth, and 21% trail. Flat-equivalent effort: 255.4 FlatKM.

Poles

Trekking poles are strongly recommended: about 12.7km of the course is steep enough for them to pay off.

Quad damage

Quad damage risk is high (index 72 of 100), with 50% of the load in the first half: 7 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 118km, then run your race pace.
  • #5 · 6.6–9.9 km · 330 m D−, -10.1% · 159.9 km ahead → control
  • #3 · 16.2–22.0 km · 517 m D−, -9.0% · 147.8 km ahead → control
  • #1 · 28.8–36.1 km · 637 m D−, -8.7% · 133.7 km ahead → control
  • #6 · 42.6–45.4 km · 385 m D−, -13.8% · 124.4 km ahead → control
  • #4 · 52.8–57.8 km · 484 m D−, -9.8% · 112.1 km ahead → control
  • #2 · 61.1–75.1 km · 889 m D−, -6.3% · 94.7 km ahead → control
  • #7 · 108.2–118.2 km · 735 m D−, -7.3% · 51.6 km ahead → control
  • 146.6–163.1 km · 1152 m D−, -7.0% · 6.7 km ahead → your pace
  • Plus 4 more notable descents not listed: your pace.

Weather

On race day, start temperatures have historically ranged from 20°C to 27°C, with around 11°C at the highest point; the chance of precipitation is about 47%.

Results

425 finishers completed the 2025 edition. Men's winner: Ionel Cristian Manole Manole (Spain) in 20:45:34. Women's winner: LIN Chen (China) in 23:47:25.

This page has the full results and splits, a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for Chongli 168.

Other distances of Nike ACG 2025 Ultra-Trail Chongli 2025Chongli 100 (104km)·Xueruyi 70 (72.0km)·Thaiwoo 50 (51.0km)·Yunding 30 (28.0km)

Other editions of Chongli 1682026

Official websitechongli168ultratrail.com/en