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Ultra runs in Gwynedd

Find ultra runs near me in Gwynedd for 2024/2025 - search by date or place, display on a map or use the advanced search to find your perfect race.

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The original Snowdonia Ultra Marathon. A beautiful route boasting stunning views, a hearty ascent of Yr Wyddfa (Snowdon) and a thrilling 7km descent to a heroes' welcome at the finish line!
  • Sun 13 Jul 2025
  • £89.99-£104.99
  • Sun 13 Jul 2025
  • £89.99-£104.99
Caernarfon, Gwynedd, UK

XTERRA Snowdonia Ultra Trail Marathon Eryri

The original Snowdonia Ultra Marathon. A beautiful route boasting stunning views, a hearty ascent of Yr Wyddfa (Snowdon) and a thrilling 7km descent to a heroes' welcome at the finish line!

  • Chip timing
  • Enter online
  • Mountainous
  • Age 20 & over
  • 57 km trail running + 2199 m ascent
  • Sun 28 Jul
Arthog, Gwynedd, UK

Ultra X Wales | 50K

  • 50 km trail running
  • Sat 3 Aug
Pwllheli, Gwynedd, UK

The Pig on the Hill Backyard Ultra

  • 4.17 miles trail running
  • Sat 17 Aug
Aberdovey, Gwynedd, UK

Run to the Castle Ultra | Ultra Marathon

  • 42 miles multi terrain running
  • Fri 18 Oct
Bangor, Gwynedd, UK

Slate Trail Ultra | Slate Trail Ultra

  • 88 km trail running
  • Sat 19 Oct
Bangor, Gwynedd, UK

Slate Trail Ultra | Ultra Tour of The Quarries

  • 145 km trail running
  • Sat 9 Nov
Pwllheli, Gwynedd, UK

The Winter Ultra

  • 37.5 miles trail running

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