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Half marathons in Wales in March 2025

Find half marathons near me in Wales in March 2025 - search by date or place, display on a map or use the advanced search to find your perfect race.

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  • Sat 1 Mar 2025
Cardiff, UK

St David's Day Run | Half Marathon

  • 13.1 miles road running
  • Sat 1 Mar 2025
Cardiff, UK

St David's Day Run | 10K

  • 10 km road running
  • Sat 1 Mar 2025
Rhayader, Powys, UK

Rhayader Round the Lakes | 30K

  • 30 km road running
  • Sun 2 Mar 2025
Anglesey, Isle of Anglesey, UK

Jones o Gymru Anglesey Half Marathon

  • 13.1 miles road running
  • Sun 9 Mar 2025
Colwyn Bay, Clwyd, UK

Colwyn Bay 5 Miler, 10 Miler & 20 Miler | 20 Miler

  • 13.1 miles road running
  • Sun 16 Mar 2025
Burry Port, Dyfed, UK

Great Welsh Marathon Events | Half Marathon

  • 13.1 miles road running
  • Sat 22 Mar 2025
Carmarthen, Dyfed, UK

Brechfa Trail Races: Half Marathon & Marathon | Half Marathon

  • 13 miles trail running
  • Sun 30 Mar 2025
Merthyr Tydfil, Mid Glamorgan, UK

San Domenico 20/10 Miler | 20 Miler

  • 20 miles road running

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