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Trail 5K runs in South Wales

Find trail 5k runs in South Wales in 2026/2027 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.

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Didn't get a ballot entry into The London Marathon? Don't panic, come and experience this 5K event instead and earn a fantastic London-themed medal!
  • Sun 26 Apr
  • £15-£27
Aberdare, Mid Glamorgan, UK

The Nearly But Not Quite London Marathon | Wales | 5K

Didn't get a ballot entry into The London Marathon? Don't panic, come and experience this 5K event instead and earn a fantastic London-themed medal!

  • 5 km trail running
  • Enter online
  • Traffic free
  • Age 12 & over
Come and join in for the Christmas Carol Bobble Hat Run in the picturesque Dare Valley in Wales! At this event you can earn yourself a running buff as well as one of the incredible themed medals!!
  • Sun 20 Dec
  • £26-£36
Aberdare, Mid Glamorgan, UK

The Snow Globe Gallop Bobble Hat Run - Wales | 5K

Come and join in for the Christmas Carol Bobble Hat Run in the picturesque Dare Valley in Wales! At this event you can earn yourself a running buff as well as one of the incredible themed medals!!

  • 5 km trail running
  • Enter online
  • Age 12 & over
  • Sat 11 Apr
  • £19.95
Swansea, West Glamorgan, UK

RTT Gower Trail Half Marathon & 10K | 5K

  • 5 km trail running

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