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Trail Marathons in Wales in April 2026

Find trail marathons in Wales in April 2026 - 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 2026? Don't panic, come and run with Saturn Running instead!
  • Sun 26 Apr 2026
  • £22-£35
Aberdare, Mid Glamorgan, UK

The Nearly But Not Quite London Marathon - Wales | Marathon

Didn't get a ballot entry into The London Marathon 2026? Don't panic, come and run with Saturn Running instead!

  • Enter online
  • Age 18 & over
  • 26.2 miles trail running + 0 ft ascent
  • Sun 5 Apr 2026
Carmarthen, Dyfed, UK

The Pendine Races | Marathon

  • 26.2 miles trail running
  • Sat 25 Apr 2026
Haverfordwest, Pembrokeshire, UK

EnduranceLife - Pembrokeshire | Marathon

  • 27.3 miles trail running + 3067 ft ascent

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