Arc of Attrition Truro, United Kingdom   Jan 23–25, 2026

From picturesque villages and secluded coves, to rugged and unforgiving terrain, the dramatic South West Coast Path has it all!

The Arc 100, Arc 50, Arc 25 and Arc 12 are point-to-point challenging coastal races along the stunning and dramatic South West Coast Path – the UK’s longest National Trail.

The Arc of Attrition by UTMB will see competitors tackling some of Cornwall’s finest coastal trails in tough and unpredictable winter conditions.

Born in 2015, the Arc of Attrition has grown from a single 100 mile foot race with 50 competitors to be recognised as one of the UK’s largest and most in-demand trail events offering multiple race distances.

Arc 100 is a unique point-to-point race along the most exposed sections of the South West Coast Path in England’s South West. From Coverack to Porthtowan, runners will experience the stunning and dramatic ‘arc’ of Cornwall.