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Half marathons with PB potential in Wales

Find half marathons with pb potential in Wales 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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The most beautiful half marathon in North Wales! Flanked by breathtaking views of Eryri (Snowdonia), the beauty and uniqueness of this event is what draws people from all over the UK!
  • Sun 1 Mar
  • £46.99-£49.99
Anglesey, Isle of Anglesey, UK

Jones o Gymru Anglesey Half Marathon

The most beautiful half marathon in North Wales! Flanked by breathtaking views of Eryri (Snowdonia), the beauty and uniqueness of this event is what draws people from all over the UK!

  • Chip timing
  • Enter online
  • Undulating
  • PB
  • Traffic free
  • Age 17 & over
  • 13.1 miles road running + 224 m ascent
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
  • 19 charities
Cardiff, South Glamorgan, UK

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!

  • 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
  • 13.1 miles road running + 81 m ascent
  • Sun 8 Feb
Llanelli, Dyfed, UK

Llanelli 10K & Half Marathon | Half Marathon

  • 13.1 miles road running + 58 m ascent
  • Sun 8 Mar
Burry Port, Dyfed, UK

Great Welsh Marathon Events | Half Marathon

  • 13.1 miles road running + 240 ft ascent
  • Sun 7 Jun
Swansea, West Glamorgan, UK

Swansea Half Marathon

  • 13.1 miles road running

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