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Half marathons in Wales

Find half marathons near me in Wales for 2025/2026 - filter by date or location, display on a map or use the advanced search to find your perfect race.

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  • Sun 22 Mar 2026
Merthyr Tydfil, Mid Glamorgan, UK

The Merthyr Half Marathon | Half Marathon

  • 13.1 miles road running
  • Sat 4 Apr 2026
Aberdyfi, Gwynedd, UK

Aberdyfi Half Marathon | Half Marathon

  • 21.1 km trail running + 850 m ascent
  • Sat 9 May 2026
Cardiff, UK

Radyr Trail Races: Half Marathon and Marathon | Half Marathon

  • 13.1 miles trail running
  • Sun 10 May 2026
Llanrwst, Clwyd, UK

Snowdonia Half Marathon

  • 13.1 miles road running + 1919 ft ascent
  • Sun 13 Sep 2026
Llanwddyn, Powys, UK

Lake Vyrnwy Half Marathon

  • 13.1 miles road running

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