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Triathlons in Wales

Find triathlons in 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.

The totally unique ROC format, from Abersoch Bay to the top of Wales’ highest mountain and back. Swim, Bike, Mountain, Bike, Run; THE ROC WALES is triathlon - tough and redefined.
  • Sat 9 May
  • £250-£270
Pwllheli, Gwynedd, UK

THE ROC WALES

The totally unique ROC format, from Abersoch Bay to the top of Wales’ highest mountain and back. Swim, Bike, Mountain, Bike, Run; THE ROC WALES is triathlon - tough and redefined.

  • 1.5 km sea swimming
  • 100 km road cycling
  • 13 km multi terrain running + 3330 ft ascent
  • Recycling
  • Plastic bottle free
  • Entertainment
  • Music
  • Chip timing
  • Enter online
  • Hilly
  • Mountainous
  • Event village
  • Event expo
  • Coast
  • Mountains
  • Sustainability policy
  • Plastic-free event
  • Age 18 & over
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
  • £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.

  • Sprint triathlon
  • Olympic triathlon
  • Half Ironman
  • Ironman
  • Standard duathlon
  • 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
Race the North Wales coast in a spectacular multi-sport challenge, combining sea air, closed roads and iconic scenery in a fast, friendly triathlon and duathlon setting.
  • Sun 28 Jun
  • £94.99-£141.99
Llandudno, Clwyd, UK

Wild Horse Brewing Co. Llandudno Triathlon & Duathlon

Race the North Wales coast in a spectacular multi-sport challenge, combining sea air, closed roads and iconic scenery in a fast, friendly triathlon and duathlon setting.

  • Sprint triathlon
  • Olympic triathlon
  • Standard duathlon
  • Beginner-friendly
  • Music
  • Event village
  • Age 15 & over
Awarded the Event of the Year (2021) in the Welsh Triathlon Awards, The Snowman is well known as the toughest multi-terrain triathlon and duathlon in the UK. Not for the faint-hearted.
  • Sun 26 Jul
  • £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 and duathlon in the UK. Not for the faint-hearted.

  • Sprint triathlon
  • Olympic triathlon
  • Half Ironman
  • Sprint duathlon
  • Lake swim 2
  • Beginner-friendly
  • Music
  • Event village
  • Age 17 & over
Start with a water swim in beautiful Llyn Tegid against a mountain backdrop, then push through scenic bike and run routes on fully closed roads around Bala, North Wales.
  • Sun 6 Sep
  • £98.99-£259.99
Bala, Gwynedd, UK

Triathlon Y Bala

Start with a water swim in beautiful Llyn Tegid against a mountain backdrop, then push through scenic bike and run routes on fully closed roads around Bala, North Wales.

  • Sprint triathlon
  • Olympic triathlon
  • Half Ironman
  • Carbon offset
  • Recycling
  • Beginner-friendly
  • Plastic bottle free
  • Dogs allowed at venue
  • Music
  • Event village
  • Rural
  • Mountains
  • Free venue entry
  • Sustainability policy
  • Age 15 & over
An unforgettable adventure triathlon, The Sandman has been described as one of the most beautiful and thrilling multi-terrain races in the UK, offering a unique experience for athletes of all levels.
  • Sun 27 Sep
  • £76.99-£259.99
Llanfairpwllgwyngyll, Isle of Anglesey, UK

Superfeet Sandman Triathlon and Duathlon

An unforgettable adventure triathlon, The Sandman has been described as one of the most beautiful and thrilling multi-terrain races in the UK, offering a unique experience for athletes of all levels.

  • Sprint triathlon
  • Olympic triathlon
  • Half Ironman
  • Sprint duathlon
  • Families
  • Trees not tees
  • Recycling
  • Beginner-friendly
  • Plastic bottle free
  • Music
  • Event village
  • Event expo
  • Rural
  • Coast
  • Free venue entry
  • Sustainability policy
  • Public transport links
  • Plastic-free event
  • Age 15 & over
  • Sat 27 Jun
  • FREE
Caldicot, Gwent, UK

Caldicot Kids Triathlon

  • Kids triathlon 6
  • Sat 27 Jun
  • FREE
Caldicot, Gwent, UK

Caldicot Triathlon

  • Novice triathlon 3

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