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Road runs with PB potential in Wales

Find road runs with pb potential in Wales in 2025/2026 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.

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

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 2026
  • £9.99-£49.99
Anglesey, Isle of Anglesey, UK

Jones o Gymru Anglesey Half Marathon and 10K

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!

  • Families
  • Carbon offset
  • Recycling
  • Beginner-friendly
  • Plastic bottle free
  • Music
  • Event village
  • Rural
  • Free venue entry
  • Sustainability policy
  • Public transport links
  • Plastic-free event
  • Age 5 & over
  • Fun run
  • 10K run
  • Half marathon
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 2026
  • £5-£60
  • 18 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 2026
Llanelli, Dyfed, UK

Llanelli 10K & Half Marathon

  • 10K run
  • Half marathon
  • Sun 8 Mar 2026
Burry Port, Dyfed, UK

Great Welsh Marathon Events

  • Half marathon
  • Marathon
  • 10K run
  • Sun 26 Apr 2026
Wrexham, Clwyd, UK

Wrexham 10K

  • 10 km road running + 102 m ascent
  • Sun 7 Jun 2026
Swansea, West Glamorgan, UK

Swansea Half Marathon

  • 13.1 miles road running

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