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Trail runs in Wales

Find trail runs 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.

  • Sun 30 Nov
Port Talbot, West Glamorgan, UK

RTT Afan Forest 10k & 5K

  • 5K run
  • 10K run
  • Sat 6 Dec
Crickhowell, Powys, UK

Secret Santa Figgy Pud 14K, Turkey Ten Mile & Half Marathon Du Mulled Wine

  • Trail run
  • 10 miler
  • Half marathon
  • Sat 13 Dec
Grecynon, Mid Glamorgan, UK

Celtic Trail Races

  • Marathon
  • Ultra run
  • Half marathon
  • Sun 15 Feb 2026
Caerphilly, Gwent, UK

Caerphilly Trail 5K and 10K

  • 5K run
  • 10K run
  • Sat 28 Feb 2026
Haverfordwest, Pembrokeshire, UK

Ras Dewi Sant

  • 10K run
  • Half marathon
  • Marathon
  • Sat 14 - Sun 15 Mar 2026
Wrexham, Clwyd, UK

Brynkinalt Running Festival

  • CaniCross 2
  • 5K run
  • 10K run
  • Sat 14 Mar 2026
Carmarthen, Dyfed, UK

Brechfa Trail Races: Half Marathon & Marathon

  • Half marathon
  • Marathon
  • Sun 22 Mar 2026
Port Talbot, West Glamorgan, UK

Red Warrior Multi Terrain Races | 20K

  • 20 km multi terrain running
  • Sat 4 Apr 2026
Aberdyfi, Gwynedd, UK

Aberdyfi Half Marathon | Half Marathon

  • 21.1 km trail running + 850 m ascent
  • Sun 5 Apr 2026
Carmarthen, Dyfed, UK

The Pendine Races

  • 5K run
  • 10K run
  • Half marathon
  • Marathon
  • Ultra run
  • Sat 11 Apr 2026
Swansea, West Glamorgan, UK

RTT Gower Trail Half Marathon & 10K

  • 5K run
  • 10K run
  • Half marathon
  • Sat 25 Apr 2026
Haverfordwest, Pembrokeshire, UK

EnduranceLife - Pembrokeshire

  • 10K run
  • Half marathon
  • Marathon
  • Ultra run
  • Sat 9 May 2026
Cardiff, UK

Radyr Trail Races: Half Marathon and Marathon

  • Half marathon
  • Marathon
  • Sun 10 May 2026
Llangollen, Clwyd, UK

Llangollen Trail 10K & Kids 1 Mile Race

  • Fun run
  • 10K run
  • Sat 6 Jun 2026
Brecon, Powys, UK

Midnight Mountain Marathon

  • Mountain marathon
  • Half marathon
  • Sun 21 Jun 2026
Llanwddyn, Powys, UK

Lake Vyrnwy 10K

  • 10 km trail running

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