Thaiwoo 50 is a 51.0 km ultra trail of Nike ACG 2025 Ultra-Trail Chongli 2025 in Chongli, China. The race starts on July 11, 2025. The course climbs 2332 m+ and descends 2628 m−, between a low point of 1255 m and a high point of 2035 m. By gradient, 40% of the distance is uphill, 45% downhill and 15% flat. The longest climb runs 3.8 km at an average 6.4% grade (240 m of vertical). The longest descent runs 4.2 km at 12.0% (504 m of vertical). Surface: 28% trail, 25% road, and 19% smooth. Flat-equivalent effort: 73.3 FlatKM.
2,115 finishers completed the 2025 edition. Men's winner: Biao Yu (China) in 5:03:04. Women's winner: Linlin Yang (China) in 5:48:24.
This page has the full results and splits, interactive elevation profile, gradient matrix, pacing and nutrition planner and weather climatology for Thaiwoo 50.
Other distances of Nike ACG 2025 Ultra-Trail Chongli 2025Chongli 168 (172 km)·Chongli 100 (104 km)·Xueruyi 70 (72.0 km)·Yunding 30 (28.0 km)
Other editions of Thaiwoo 502026
Official websitechongli168ultratrail.com/en
