Trail & ultra · UTMB World Series

Arc of Attrition by UTMB 2027

From January 22 to 24, 2027

🇬🇧 Perranporth (Cornwall) · United Kingdom

The events

Arc 100Arc 50Arc 25

When to start training

In trail running, training time depends on your finish time, not only on the distance. For this edition:

Trail under 3h3012 weeks · ideal start November 2, 2026
Trail of 3h30 to 5h3016 weeks · ideal start October 5, 2026
Trail of 5h30 to 8h20 weeks · ideal start September 7, 2026
Ultra of 8 to 16h24 weeks · ideal start August 10, 2026
Ultra over 16h24 weeks · ideal start August 10, 2026
Your plan up to race day, in CadeviaThe Coach builds every week until the race, around your days and your level.Join the beta →

Tools for this race

Frequently asked questions

When is Arc of Attrition by UTMB 2027?

Arc of Attrition by UTMB 2027 takes place from January 22 to 24, 2027, in Perranporth (Cornwall) (United Kingdom). Date read on October 15, 2026 from its official source.

Where can I see the results?

The organiser publishes the results on its official results page.

Does Cadevia organise this race?

No. Cadevia is a training app: we read the dates from the official sources to help you choose and prepare your race. Entries are handled by the organiser.