Arc Of Attrition by UTMB
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Arc of Attrition by UTMB
Arc of Attrition by UTMB is a coastal ultramarathon held on Cornwall's South West Coast Path. The event is part of the UTMB World Series and takes place each January in Perranporth, Cornwall, UK, with the 2027 edition scheduled for 22–24 January.
Routes run along exposed cliff paths and include sustained, often steep climbs. Races take place in winter conditions that can be unpredictable, and courses mix coastal terrain with sections of trail and cliff-top paths.
The event began in 2015 as a single 100-mile race and has since expanded to offer multiple distances across the weekend.
Distances and elevation gains:
- Arc 100M - 173 km, 5507 m+ elevation
- Arc 100K - 82.7 km, 2708 m+ elevation
- Arc 50K - 49.4 km, 1458 m+ elevation
- Arc 20K - 22.1 km, 744 m+ elevation
Each race is presented separately within the event programme, with distance and total ascent specified for the course. Visit the organization's website for the most recent information.
