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Road Half marathons in Wales

Find road half marathons 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!

  • 13.1 miles road running + 224 m ascent
  • Chip timing
  • Enter online
  • Undulating
  • PB
  • Traffic free
  • Age 17 & over
Come and join the Dashing Dog Charity run in the picturesque Dare Valley Country Park. Not only is the scenery beautiful but you will earn one of these awesome medals for your half marathon!
  • Sun 15 Mar
  • £24-£38
Aberdare, Mid Glamorgan, UK

The Dashing Dog Charity Run | Wales | Half Marathon

Come and join the Dashing Dog Charity run in the picturesque Dare Valley Country Park. Not only is the scenery beautiful but you will earn one of these awesome medals for your half marathon!

  • 13.1 miles road running
  • Enter online
  • Flat
  • Traffic free
  • Age 17 & over
Come and celebrate 50 years since the release of the iconic Rocky film! Have you got the Eye of The Tiger, the guts to get the glory and the will to rise up to the challenge and run a half marathon?
  • Sat 30 May
  • £22-£35
Aberdare, Mid Glamorgan, UK

Rocky at 50 Run | Wales | Half Marathon

Come and celebrate 50 years since the release of the iconic Rocky film! Have you got the Eye of The Tiger, the guts to get the glory and the will to rise up to the challenge and run a half marathon?

  • 13.1 miles road running
  • Enter online
  • Flat
  • Traffic free
  • Age 17 & over
Who hasn't completed a race, sworn they will never run again and then booked onto another one the following day?!
  • Sat 25 Jul
  • £22-£35
Aberdare, Mid Glamorgan, UK

Ooops I Ran It Again | Wales | Half Marathon

Who hasn't completed a race, sworn they will never run again and then booked onto another one the following day?!

  • 13.1 miles road running
  • Enter online
  • 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, 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!

  • 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
  • Sun 1 Mar
  • £38-£40
Newport, Gwent, UK

The KLA City of Newport Half Marathon

  • 13.1 miles road running
  • Sun 1 Mar
  • £30-£35
Cardiff, UK

St Davids Day Run | Half Marathon

  • 13.1 miles road running
  • Sun 8 Mar
  • £42
Burry Port, Dyfed, UK

Great Welsh Marathon Events | Half Marathon

  • 13.1 miles road running + 240 ft ascent
  • Sun 22 Mar
  • £37-£42
Merthyr Tydfil, Mid Glamorgan, UK

The Merthyr Half Marathon | Half Marathon

  • 13.1 miles road running
  • Sun 29 Mar
  • £40-£42
Llandudno, Clwyd, UK

Llandudno Half Marathon & 10 Mile | Half Marathon

  • 13.1 miles road running
  • Sun 10 May
  • £40-£42
Llanrwst, Clwyd, UK

Snowdonia Half Marathon

  • 13.1 miles road running + 1919 ft ascent
  • Sat 6 Jun
  • £30-£35
Cardiff, UK

Conquer Cardiff Summer | Half Marathon

  • 13.1 miles road running
  • Sun 7 Jun
  • £47
Swansea, West Glamorgan, UK

Swansea Half Marathon

  • 13.1 miles road running
  • Sun 13 Sep
  • £35
Beaumaris, Isle of Anglesey, UK

Beaumaris Run Fest Weekend | Half Marathon

  • 13.1 miles road running
  • Sun 13 Sep
  • £38-£40
Llanwddyn, Powys, UK

Lake Vyrnwy Half Marathon

  • 13.1 miles road running
  • Sun 27 Sep
  • £35
Haverfordwest, Pembrokeshire, UK

Pembrokeshire Half Marathon

  • 13.1 miles road running
  • Sun 4 Oct
  • £40-£42
Bangor, Gwynedd, UK

Bangor City 10K & Half Marathon | Half Marathon

  • 13.1 miles road running
  • Sun 15 Nov
  • £42-£44
Conwy, Clwyd, UK

Conwy Half Marathon | Half Marathon

  • 13.1 miles road running + 1247 ft ascent

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