Celtic Trail Races

DEC
12
2026
Winter trail races in South Wales with three fully marked courses through Afan Forest and the Rhigos, finishing at Dare Valley Country Park.
Sat 12 Dec 2026
34 miles 26 miles 13 miles

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Celtic Trail Races

The Celtic Trail Races take place on 12th December 2026 and are in their seventh year. The event offers three fully marked trail races that start and finish around Dare Valley Country Park and use high-level trails on the Coed Morgannwg Way.

Routes run through Afan Forest and the Rhigos mountain range with varied terrain including sharp climbs, long flowing descents, river crossings and remote-feeling single track. The course descriptions mention hidden reservoirs, ancient woodland tracks, wind turbines and views across the Brecon Beacons National Park. Maps are provided and GPX files are available for download.

Race distances and limits:

  • Celtic Ultra: 34 miles, 1,783m ascent, 10 hour limit
  • Celtic Trail Marathon: 26 miles, 1,280m ascent, 9 hour limit
  • Celtic Trail Half Marathon: 13 miles, 670m ascent, 7 hour limit

There are manned checkpoints with refreshments: 7 for the Ultra, 6 for the Marathon and 3 for the Half. The half marathon is a linear route; coach transport to the half start is offered at extra cost and a 10 litre finish bag can be taken on the coach. Car parking locations differ by race distance. A compulsory kit list must be carried by all competitors. Entry fees include a finisher medal, free race photographs, mince pies and Christmas songs at the finish, medical cover and electronic or GPS timing and tracking. Visit the organization's website for the most recent information.

34 mi
Celtic Ultra
26 mi
Celtic Trail Marathon
13 mi
Celtic Trail Half Marathon

Events nearby

A seven hour Time Challenge at Dare Valley Country Park offering distances from 3km to 50km, themed finisher medals and distance pins, on course aid with vegan options, and basic venue facilities including toilets and free parking.
Join the Aberfan Memorial Run in Merthyr Tydfil to honour the 1966 victims and support the Aberfan Memorial Charity. Choose 5 km to ultra on a scenic tarmac loop along the Taff Trail with flexible start times and official timing.
A 32 km, 1800 m mountain challenge on Pen y Fan with three climbs via six different routes, offered as an unweighted race or a 16 kg weighted category.
Timed lap event at Barry Sidings Country Park with flexible start times, distances from 5 km to ultra on a tarmac out and back course and a medal or no medal option.
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