Arc Of Attrition by UTMB

JAN

22-24

2027

Coastal UTMB World Series ultramarathon in Cornwall offering four winter distances from 22.1 km to 173 km along the South West Coast Path.

22-24 Jan 2027

Coverack, South West (England)

Website

173 kilometers 83 kilometers 49 kilometers 22 kilometers

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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.

173 km

Arc 100m

83 km

Arc 100k

49 km

Arc 50k

22 km

Arc 20k

Events nearby

Aug

23

Su

Gecko Gathering - Scorrier House

Redruth | 15 mi from Coverack

Trail Run 3 km 5 km 10 km 13 mi

Timed races from 2.5 km to a half marathon take place at Scorrier House on 23 August 2026, alongside a five hour endurance event called Scorriergeddon. On-site food, music and awards are part of the event.

Sep

12

Sa