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Runs in Wales in May 2025

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

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The finish line is unique to you: 24 hours after the mass start, the race shall stop and the Solo Runners and Teams furthest South on the National Trail, shall be declared winners.
  • Sat 10 - Sun 11 May
  • £92.50-£145
  • Sat 10 - Sun 11 May
  • £92.50-£145
Prestatyn, Clwyd, UK

24 Hours South - The Offa's Dyke Ultra

The finish line is unique to you: 24 hours after the mass start, the race shall stop and the Solo Runners and Teams furthest South on the National Trail, shall be declared winners.

  • Newcomers
  • Chip timing
  • Enter online
  • GPS tracking
  • Event village
  • Rural
  • Age 18 & over
  • 24 hrs trail running
  • Sat 3 May
Llanidloes, Powys, UK

The HOWUM

  • 30 miles trail running
  • Sun 4 May
Cardiff, UK

Cardiff 5K - Race For Victory

  • 5 km road running
  • Fri 9 May
Cardiff, UK

Cardiff to London

  • 200 miles trail running
  • Sat 10 May
Port Talbot, West Glamorgan, UK

Afan Chase Trail Races

  • 10K run
  • Half marathon
  • Sat 10 May
Clynderwen, Pembrokeshire, UK

The Preseli Beast

  • Fell run 3
  • Sat 10 May
Cardiff, UK

Radyr Trail Races: Half Marathon and Marathon

  • Half marathon
  • Marathon
  • Sat 10 May
Tywyn, Gwynedd, UK

Cadair X Half Marathon

  • 13.1 miles trail running
  • Sun 11 May
Caerphilly, Gwent, UK

Bryn Meadows Caerphilly 10K & Caerphilly 2K

  • Fun run
  • 10K run
  • Sun 11 May
Llangollen, Clwyd, UK

Llangollen Trail 10K & Kids 1 Mile Race

  • Fun run
  • 10K run
  • Sun 11 May
Mold, Clwyd, UK

Excalibur Trail Races

  • 10K run
  • Half marathon
  • Marathon
  • CaniCross 3
  • Sun 11 May
Llanrwst, Clwyd, UK

Snowdonia Half Marathon

  • 13.1 miles road running
  • Thu 15 - Mon 19 May
Llanidloes, Powys, UK

The Severn Challenge

  • Marathon
  • Ultra run 4
  • Sat 17 May
Merthyr Tydfil, Powys, UK

OTT Trail Marathon and 10 Mile Race - Brecon Beacons

  • 10 miler
  • Marathon
  • Sat 17 May
Crickhowell, Powys, UK

Tenacious Ten Hour Endurance Challenge

  • 10 hrs trail running
  • Wed 21 May
Cardiff, UK

SSAFA Cardiff 5K Road Race Series - Race 1

  • 5 km road running
  • Sat 24 May
Brecon, Powys, UK

Christ College Brecon Mountain Challenge

  • 10 miler
  • Fell run 2
  • Short walk 2
  • Long distance walk
  • Sun 25 May
Newtown, Powys, UK

Newtown 10K Run

  • 10 km road running
  • Sun 25 May
Swansea, West Glamorgan, UK

The Swansea 5K

  • 5 km road running
  • Sun 25 May
Lampeter, Dyfed, UK

Sarn Helen Hill Race

  • 16.5 miles fell running
  • Sat 31 May
Caernarfon, Gwynedd, UK

Welsh 1000M Peaks Race

  • Fell run 2
  • Sat 31 May
Pwllheli, Gwynedd, UK

Abersoch 10K and 3K Beach Race

  • 10K run
  • Fun run

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