Arc of Attrition by UTMB Arc 50K
Harlyn Bay south to Perranporth, fifty kilometres of coast path.
50K
31 miles
1,209 m ascent
24 m per km
9h cut-off
10:48/km to make it
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No reviews of the Arc 50K, and nothing on what people wore. Both are things no organiser publishes and every runner wants before they enter — how it actually went, and what was on your feet.
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The course
VERY HARD
TRP grade · E4·T3
9h cut-off, which needs 10:48/km
5 checkpoints
This file is from a previous running and the course may have changed since. If you are navigating with it, get the current version from Arc of Attrition by UTMB first.
What you’re in for
Harlyn Bay south to Perranporth Airfield on the Sunday of Arc weekend: 49km on the GPX with 1,209m of climb (organiser: 49.4km and 1,458m), a nine o'clock start, nine hours. Round Trevose Head, past Porthcothan and Mawgan Porth, through Newquay, out over Polly Joke and Holywell Bay and along Perran Sands to the finish. Three checkpoints with food, drink, shelter and toilets, mandatory kit carried throughout. The coast path's own waymarking with some extra from the organiser; prior trail experience recommended rather than required.
Terrain and trail
Cliff path and headland from Harlyn to Newquay with steep drops into every cove, town pavement through Newquay, then dune and beach — Holywell and the long Perran Sands, soft going in January — before the last climb to the airfield. Exposed to the Atlantic all the way. A trail shoe with grip.
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How to enter
Sun, 24 Jan 2027 · Entries open
Enter via UTMB World Series ↗Entries are handled by UTMB World Series, not by us. We take nothing for sending you there.
Add to your calendar · with the start time
Common questions
- The Arc 50K is one distance: 50K (31.1 miles).