Celtic Trail Races

Aberdare, United Kingdom • 12 Dec 2026

Celtic Trail Races

The Celtic Trail Races are winter trail events that run through Afan Forest, the Rhigos mountain range and the Coed Morgannwg Way, finishing at Dare Valley Country Park in Aberdare, Rhondda Cynon Taff. Routes include sharp climbs, long flowing descents, river crossings and remote single track on trails described as fast and runnable. Participants pass reservoirs, ancient woodland, wind turbines and viewpoints across the Brecon Beacons National Park. Routes are fully marked with arrows, flags and tape; maps and GPX files are supplied and competitors are advised to download the current GPX because there are course changes from previous years.

Race distances

  • Celtic Ultra - 34 miles, 5,850 ft ascent, circular from Dare Valley Park
  • Celtic Trail Marathon - 26 miles, 4,200 ft ascent, circular from Dare Valley Park
  • Celtic Trail Half Marathon - 13 miles, 2,200 ft ascent, linear from Resolven to Dare Valley Park

There are manned checkpoints providing water, fruit, sweets, biscuits and crisps: seven on the Ultra, six on the Marathon and three on the Half. The Half Marathon is a linear route and coach transport is available at extra cost with a small finish bag allowance of 10 litres; the Ultra and Marathon are circular and do not require transfers. Each course has a published time limit and a compulsory kit list that must be carried. Onsite accommodation is available at Dare Valley Country Park. Entry fees include timing, GPS tracking, event photographs, checkpoint refreshments and land permits. Visit the organization's website for the most recent information.

Race information

34 mi
Celtic Ultra
26 mi
Celtic Trail Marathon
13 mi
Celtic Trail Half Marathon
Visit the organization's website for the most recent information.
Trail runs nearby

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Join the award winning Cosmeston Relays for a team competition at Cosmeston Lakes Country Park. Teams of three tackle an undulating three mile circuit in this popular chip timed baton race.

On 11 July 2026 an event in the Black Mountains offers distances from half marathon to 50 mile. Routes are self navigated with GPX files and supported by checkpoints, tracking, food provisions and medical cover.

A timed, multi lap run at Parc Taf Bargoed using a 5.3 km out and back lap. Distances range from 5 km to ultra with a seven hour limit and a medal or no medal entry option.

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