Great Wall 20K is the 33.0km trail race at Ultra-Trail Great Wall by UTMB 2025 (Zhangjiakou, China). The race starts on May 16, 2025.
By gradient, 35% of the distance is uphill, 37% downhill and 28% flat. Surface: 44% trail, 36% road, and 5% smooth. Flat-equivalent effort: 41.1 FlatKM.
Poles bring little benefit here: only about 0.7km of pole-friendly terrain.
Quad damage risk is low (index 18 of 100): a few descents worth noting, none of them decisive.
On race day, start temperatures have historically ranged from 14°C to 25°C, with around 21°C at the highest point; the chance of precipitation is about 20%.
2,183 finishers completed the 2025 edition. Men's winner: Hu Zhao (China) in 2:29:02. Women's winner: Kaili Fan (China) in 3:03:40.
This page has the full results and splits, a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for Great Wall 20K.
Other distances of Ultra-Trail Great Wall by UTMB 2025Great Wall 100K (105km)·Great Wall 50K (54.0km)
Other editions of Great Wall 20K2026
Official websitedajingmen.utmb.world
