A 22 km coastal loop from Perranporth — your introduction to the Arc
The Arc 20K is a 22 km loop on Cornwall's north coast that starts and finishes at Perranporth Airfield. Runners head south on the South West Coast Path through St Agnes to the single aid station at Porthtowan, about halfway, then loop back north inland over St Agnes Beacon to the finish — the first loop course in Arc of Attrition history. The course climbs 744 metres with a 4-hour time limit. No support crew is allowed and mandatory kit is required. The race is open to runners aged 17 and over.
Suitable for first-timers
Porthtowan, England, United KingdomJanuary 24, 2027
Arc of Attrition Arc 20K is a loop trail race in Porthtowan, England, United Kingdom, held on January 24, 2027. The course covers 22.1 km, climbs 744 m, and has a 4h cutoff.
| Location | km | Elevation | Cutoff |
|---|---|---|---|
Start Fin Start | 0.0 | 101 m | — |
AS13 Porth Aid Station | 9.4 | 10 m | — |
Finish Finish | 21.9 | 101 m | 4h3:00 PM |
Aid station details for this race are still being filled in. Cutoffs and access rules come from the race’s own published information and can change — check the official race details before planning around them.
Sign in for race-day weather at every station, points of interest, segment-by-segment analysis, pacing, and to save this race to your calendar.
No camping at the event venue. From 2027 the event is based at Perranporth Airfield (Higher Trevellas St, Trevellas, St Agnes TR5 0XS), and overnight stays, including sleeping in vehicles or tents, are not permitted in the event car park. Book a local campsite, B&B or hostel early; Nirvana is the official travel and accommodation partner.
No required gear specified
No recommended gear specified
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