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Great Wall 20K is a 31.0 km trail race of Ultra-Trail Great Wall by UTMB 2026 in Dajingmen, China. The race starts on September 13, 2026 at 07:30 AM. It starts and finishes in Dajingmen. The time limit is 9 h.
The course climbs 1455 m+. With 47 m/km of climbing, this is a true mountain course with sustained climbs and descents. By gradient, 47% of the distance is uphill, 36% downhill and 16% flat. The longest climb runs 5.6 km at an average 4.7% grade (264 m of vertical). The longest descent runs 2.2 km at 8.6% (191 m of vertical). The steepest climb averages 18.6% over 0.7 km. The steepest descent drops at 29.5% over 0.4 km. Surface: 44% trail, 35% road, and 5% smooth. Flat-equivalent effort: 43.0 FlatKM.
Poles bring little benefit here — only about 1.2 km of pole-friendly terrain.
Quad damage risk is low (index 18 of 100): a few descents worth noticing, none that decides the result.
Historically on race day, start temperatures range from 12°C to 19°C, around 21°C at the highest point; the chance of precipitation is about 30%. Heavy rain of 10.0 mm or more falls on about 4% of days around this date.
This page has the interactive elevation profile, gradient matrix, pacing and nutrition planner and weather climatology for Great Wall 20K.
Other distances of Ultra-Trail Great Wall by UTMB 2026Great Wall 100K (100 km)·Great Wall 50K (52.0 km)
Other editions of Great Wall 20K2025
Official websitedajingmen.utmb.world
