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Trail Marathons in West Wales

Find trail marathons in West 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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  • Sat 28 Feb
Haverfordwest, Pembrokeshire, UK

Ras Dewi Sant | Full Marathon

  • 26.2 miles trail running
  • Sat 14 Mar
Carmarthen, Dyfed, UK

Brechfa Trail Races: Half Marathon & Marathon | Marathon

  • 26 miles trail running
  • Sun 5 Apr
Carmarthen, Dyfed, UK

The Pendine Races | Marathon

  • 26.2 miles trail running
  • Sat 25 Apr
Haverfordwest, Pembrokeshire, UK

EnduranceLife - Pembrokeshire | Marathon

  • 27.3 miles trail running + 3067 ft ascent

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