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Duathlons in North Wales in Summer

Find duathlons in North Wales in Summer - 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 iconic multi-sport adventure race in Wales, combining a lake swim, brutal mountain climbs and a demanding run through Snowdonia’s dramatic, awe-inspiring landscape.
  • Sun 14 Jun 2026
  • £85.99-£449.99
Caernarfon, Gwynedd, UK

Slateman Triathlon & Duathlon

The most iconic multi-sport adventure race in Wales, combining a lake swim, brutal mountain climbs and a demanding run through Snowdonia’s dramatic, awe-inspiring landscape.

  • Carbon offset
  • Recycling
  • Beginner-friendly
  • Plastic bottle free
  • Dogs allowed at venue
  • Music
  • Event village
  • Rural
  • Mountains
  • Free venue entry
  • Sustainability policy
  • Public transport links
  • Age 17 & over
  • Sprint triathlon
  • Olympic triathlon
  • Half Ironman
  • Ironman
  • Standard duathlon
Awarded the Event of the Year (2021) in the Welsh Triathlon Awards, The Snowman is well known as the toughest multi-terrain triathlon & duathlon in the UK;...
  • Sun 26 Jul 2026
  • £42.99-£259.99
Betws-y-Coed, Clwyd, UK

Snowman Triathlon, Duathlon and Swims

Awarded the Event of the Year (2021) in the Welsh Triathlon Awards, The Snowman is well known as the toughest multi-terrain triathlon & duathlon in the UK;...

  • Beginner-friendly
  • Music
  • Event village
  • Age 17 & over
  • Sprint triathlon
  • Olympic triathlon
  • Half Ironman
  • Sprint duathlon
  • Lake swim 2
  • Sun 28 Jun 2026
Llandudno, Clwyd, UK

Wild Horse Brewing Co. Llandudno Triathlon & Duathlon

  • Sprint triathlon
  • Olympic triathlon
  • Standard duathlon

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