4

Half marathons in South Wales

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

Filter by month

Filter by place

Map

Event listings

Select an event for photos, video, route, location, reviews, entry fees and how to enter.

Entries closed
An iconic road race around Wales' capital offering a flat course from the castle to the marina and over the Cardiff Bay barrage!
  • Sun 5 Oct
  • Entries closed
  • Sun 5 Oct
  • Entries closed
Cardiff, South Glamorgan, UK

Oysho Cardiff Half

Secure your charity place in the Cardiff Half today. Run for charity in one of the best half marathons in the world while supporting top UK charities. Find a cause and join their team today!

  • Families
  • Carbon offset
  • Wheelchair users
  • Recycling
  • Entertainment
  • Music
  • Chip timing
  • Enter online
  • Flat
  • PB
  • Traffic free
  • Fancy dress
  • Event village
  • Urban
  • Coast
  • Sustainability policy
  • Public transport links
  • Age 17 & over
  • 13.1 miles road running
  • Sat 8 Nov
Cardiff, UK

Cardiff MoRun | Half Marathon

  • 13.1 miles road running
  • Sat 8 Nov
Swansea, West Glamorgan, UK

EnduranceLife - Gower | Half Marathon

  • 14.3 miles trail running + 1916 ft ascent
  • Sat 15 Nov
Port Talbot, West Glamorgan, UK

Margam Park Trail Races | Half Marathon

  • 21.1 km trail running + 750 m ascent

Search options

Back to search options