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Half marathons in Cardiff

Find half marathons in Cardiff in 2026/2027 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.

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It's time to conquer the Cardiff Summer Half Marathon, have a morning out with family, friends, or colleagues and enjoy the stunning Bute Park then receive your superb medal!
  • Sat 6 Jun
  • £30-£35
Cardiff

Conquer Cardiff Summer | Half Marathon

It's time to conquer the Cardiff Summer Half Marathon, have a morning out with family, friends, or colleagues and enjoy the stunning Bute Park then receive your superb medal!

  • 13.1 miles road running
  • Chip timing
  • Enter online
  • Flat
  • Traffic free
  • Age 17 & over
An iconic road race around Wales' capital offering a flat course from the castle to the marina and over the Cardiff Bay barrage!
  • Sun 4 Oct
  • £5-£60
Cardiff, South Glamorgan

Oysho Cardiff Half

An iconic road race around Wales' capital offering a flat course from the castle to the marina and over the Cardiff Bay barrage!

  • 13.1 miles road running + 81 m ascent
  • Families
  • Carbon offset
  • Venue accessible
  • Recycling
  • Entertainment
  • Music
  • Chip timing
  • Flat
  • PB
  • Traffic free
  • Fancy dress
  • Event village
  • Urban
  • Coast
  • Sustainability policy
  • Public transport links
  • Age 17 & over
MoRunning brings everyday people together with the focus being to inspire you, your family, your kids and your friends to have the best time running! Get ready for the half marathon, Cardiff!
  • Sun 1 Nov
  • £25-£35
Cardiff

Cardiff MoRun | Half Marathon

MoRunning brings everyday people together with the focus being to inspire you, your family, your kids and your friends to have the best time running! Get ready for the half marathon, Cardiff!

  • 13.1 miles road running
  • Chip timing
  • Enter online
  • Flat
  • Age 17 & over
  • Sat 9 May
  • £40
Cardiff

Radyr Trail Races: Half Marathon and Marathon | Half Marathon

  • 13.1 miles trail running

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