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Half marathons in Wales in March 2026

Find half marathons near me in Wales in March 2026 - filter by date or location, 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 1 Mar 2026
  • £44.99-£49.99
  • Sun 1 Mar 2026
  • £44.99-£49.99
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 + 889 ft ascent
  • Sun 8 Mar 2026
Burry Port, Dyfed, UK

Great Welsh Marathon Events | Half Marathon

  • 13.1 miles road running + 240 ft ascent
  • Sat 14 Mar 2026
Carmarthen, Dyfed, UK

Brechfa Trail Races: Half Marathon & Marathon | Half Marathon

  • 13 miles trail running
  • Sun 22 Mar 2026
Merthyr Tydfil, Mid Glamorgan, UK

The Merthyr Half Marathon | Half Marathon

  • 13.1 miles road running

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