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Half marathons in Wales in October 2025

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

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Click an event for full event details, location, route, sustainability, what's included and how to enter.

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
  • 20 charities
  • Sun 5 Oct
  • 20 charities
Cardiff, South Glamorgan, UK

Cardiff Half Marathon

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 18 Oct
Port Talbot, West Glamorgan, UK

Afan Forest Half Marathon

  • 13.1 miles trail running
  • Sun 19 Oct
Llanwrtyd Wells, Powys, UK

Ron Skilton Memorial Half Marathon | Half Marathon

  • 13 miles trail running

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