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Mountainous Trail runs in North Wales

Find mountainous trail runs in North 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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Select an event for photos, video, route, location, reviews, entry fees and how to enter.

A breathtaking mountain challenge through Snowdonia’s rugged heart — climb steep ridges, conquer iconic peaks and soak up awe-inspiring views across lakes, valleys and the dramatic Ogwen range.
  • Sun 12 Apr
  • £37.99-£79.99
Betws-y-Coed, Clwyd, UK

Ogwen | Yr Helgi Du

A breathtaking mountain challenge through Snowdonia’s rugged heart — climb steep ridges, conquer iconic peaks and soak up awe-inspiring views across lakes, valleys and the dramatic Ogwen range.

  • Trail run 3
  • Trees not tees
  • Beginner-friendly
  • Music
  • Event village
  • Mountains
  • Public transport links
  • Age 17 & over
Your chance to take on one of the UK’s most demanding and spectacular trail races, set deep in the heart of Eryri (Snowdonia) National Park, offering a true mountain challenge.
  • Sat 11 - Sun 12 Jul
  • £31.99-£319.99
Caernarfon, Gwynedd, UK

Snowdonia Trail Marathon Eryri Events

Your chance to take on one of the UK’s most demanding and spectacular trail races, set deep in the heart of Eryri (Snowdonia) National Park, offering a true mountain challenge.

  • 10K run
  • Half marathon
  • Marathon
  • Ultra run 2
  • Families
  • Recycling
  • Beginner-friendly
  • Plastic bottle free
  • Dogs allowed at venue
  • Music
  • Event village
  • Event expo
  • Mountains
  • Free venue entry
  • Sustainability policy
  • Public transport links
  • Plastic-free event
  • Age 17 & over
  • Mon 7 - Sat 12 Sep
  • £1,699-£2,099
Conwy, Clwyd, UK

Dragon’s Back Race

  • 6 days fell running

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