Celtic Trail Races

Course

A 34 mile ultra and a 26 mile marathon run circular routes from Dare Valley Country Park, while the 13 mile half is linear from Resolven Rugby Club to the same finish. The courses cross the Afan Forest and Rhigos mountains on ancient woodland tracks, remote single track and the Coed Morgannwg Way, with sharp climbs, river crossings and 5,850ft of ascent on the ultra.

Key dates

• !
  Registration
  Open now
• ★
  Race day
  Sat 12 Dec 2026

About

Explore the enchanting Celtic Trail Races, a winter wonderland of trail running through the rugged landscapes of the United Kingdom. Challenge yourself with a 50km Ultra, full Marathon, or Half Marathon, and experience the festive spirit of this unique running adventure. Immerse yourself in the natural beauty of the region as you navigate the scenic trails.

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  Hardmoors 30

  Sat 9 Jan 2027 · Bangor, Wales · Ultra

  Cliff top trail ultra past Ravenscar and Scarborough

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• 

  Chepstow Running Festival

  Sun 24 Jan 2027 · Chepstow, Wales · Half Marathon · 10K · 5K

  Loops around historic Chepstow Racecourse

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• 

  Trails & Tarmac Winter Back Yard Ultra

  Sat 6 Feb 2027 · Crickhowell, Wales · Backyard Ultra

  Last-one-standing loop race in the Brecon Beacons

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• 

  Llandudno 10K

  Sun 7 Feb 2027 · Llandudno, Wales · 10k

  Historic promenade start beneath the awe-inspiring Great Orme

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A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.