10

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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The 'UK's most beautiful Half Marathon'! Fast run flanked by breathtaking views of Snowdonia National Park and the Menai Straits. It's no wonder this race has become a firm favourite.
  • Sun 2 Mar 2025
  • £45.99-£47.99
  • Sun 2 Mar 2025
  • £45.99-£47.99
Anglesey, Isle of Anglesey, UK

Jones o Gymru Anglesey Half Marathon

The 'UK's most beautiful Half Marathon'! Fast run flanked by breathtaking views of Snowdonia National Park and the Menai Straits. It's no wonder this race has become a firm favourite.

  • Chip timing
  • Enter online
  • Undulating
  • PB
  • Age 17 & over
  • 13.1 miles road running
  • Sat 1 Mar 2025
Haverfordwest, Pembrokeshire, UK

Ras Dewi Sant | Half Marathon

  • 13.1 miles trail running
  • 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
  • Sat 8 Mar 2025
Swansea, West Glamorgan, UK

Gower Gallop Trail Races | Half Marathon

  • 13.1 miles trail 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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