Arc 25 is a 40.0 km trail race of Arc of Attrition by UTMB 2026 in Coverack, United Kingdom. The race starts on January 22, 2026. The course climbs 783 m+ and descends 797 m−, between a low point of 2 m and a high point of 116 m. By gradient, 17% of the distance is uphill, 28% downhill and 55% flat. The longest climb runs 1.3 km at an average 3.7% grade (48 m of vertical). The longest descent runs 1.2 km at 6.3% (77 m of vertical). Surface: 42% trail, 27% road, 20% smooth, and 10% technical. Flat-equivalent effort: 47.3 FlatKM.
836 finishers completed the 2026 edition. Men's winner: Robbie Simpson (Great Britain) in 2:45:51. Women's winner: Naomi Lang (Great Britain) in 3:09:16.
This page has the full results and splits, interactive elevation profile, gradient matrix, pacing and nutrition planner and weather climatology for Arc 25.
Other distances of Arc of Attrition by UTMB 2026Arc 100 (160 km)·Arc 50 (80.0 km)·Arc 12 (24.0 km)
Other editions of Arc 252025
Official websitearcofattrition.utmb.world
