Arc 100 is a 160 km ultra trail of Arc of Attrition by UTMB 2025 in Coverack, United Kingdom. The race starts on January 24, 2025. The course climbs 3863 m+ and descends 3788 m−, between a low point of -1 m and a high point of 119 m. By gradient, 25% of the distance is uphill, 24% downhill and 50% flat. The longest climb runs 1.3 km at an average 3.6% grade (48 m of vertical). The longest descent runs 1.6 km at 3.0% (46 m of vertical). Surface: 52% trail, 21% smooth, 19% road, and 6% technical. Flat-equivalent effort: 229.1 FlatKM.
252 finishers completed the 2025 edition. Men's winner: Lewis Ryan (Great Britain) in 19:22:35. Women's winner: Noor Van Der Veen (Netherlands) in 22:30:44.
This page has the full results and splits, interactive elevation profile, gradient matrix, pacing and nutrition planner and weather climatology for Arc 100.
Other distances of Arc of Attrition by UTMB 2025Arc 50 (80.0 km)·Arc 25 (40.0 km)
Other editions of Arc 1002026
Official websitearcofattrition.utmb.world
