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Triathlons in North Wales

Find triathlons near me in North Wales for 2025/2026 - filter by date or location, display on a map or use the advanced search to find your perfect race.

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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 2026
  • £195-£225
  • Sat 9 May 2026
  • £195-£225
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.

  • 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
  • 1.5 km sea swimming
  • 100 km road cycling
  • 13 km multi terrain running + 3330 ft ascent
  • Sun 7 Sep
Bala, Gwynedd, UK

Rawson Group Triathlon Y Bala | Sprint Triathlon

  • 750 m lake swimming
  • 20 km road cycling + 587 ft ascent
  • 5 km road running + 160 ft ascent
  • Sun 7 Sep
Bala, Gwynedd, UK

Rawson Group Triathlon Y Bala | Standard Triathlon

  • 1500 km lake swimming
  • 37 km road cycling + 1181 ft ascent
  • 10 km road running + 255 ft ascent
  • Sat 20 Sep
Caernarfon, Gwynedd, UK

The Brutal Extreme Triathlon | The Brutal Bach Standard

  • 0.6 mile lake swimming
  • 28.99 miles road cycling
  • 9.5 miles trail running
  • Sat 20 Sep
Caernarfon, Gwynedd, UK

The Brutal Extreme Triathlon | The Brutal Canol Half

  • 1.2 miles lake swimming
  • 57.98 miles road cycling
  • 14.7 miles trail running
  • Sat 20 Sep
Caernarfon, Gwynedd, UK

The Brutal Extreme Triathlon | The Brutal Mawr Full

  • 2.4 miles lake swimming
  • 115.96 miles road cycling
  • 25.1 miles trail running
  • Sat 20 Sep
Caernarfon, Gwynedd, UK

The Brutal Extreme Triathlon | The Brutal Cawr Double

  • 4.8 miles lake swimming
  • 231.92 miles road cycling
  • 51.1 miles trail running
  • Sun 21 Sep
Llanfairpwllgwyngyll, Isle of Anglesey, UK

Superfeet Sandman Triathlon and Duathlon | Legend (70.3) Triathlon

  • 1900 m sea swimming
  • 93 km road cycling + 3175 ft ascent
  • 19.8 km multi terrain running + 570 ft ascent
  • Sun 21 Sep
Llanfairpwllgwyngyll, Isle of Anglesey, UK

Superfeet Sandman Triathlon and Duathlon | Sprint Triathlon

  • 750 m sea swimming
  • 22.9 km road cycling + 610 ft ascent
  • 5.4 km multi terrain running + 144 ft ascent
  • Sun 21 Sep
Llanfairpwllgwyngyll, Isle of Anglesey, UK

Superfeet Sandman Triathlon and Duathlon | Standard Triathlon

  • 1500 m sea swimming
  • 42.3 km road cycling + 1154 ft ascent
  • 9.9 km multi terrain running + 282 ft ascent
  • Sat 4 Oct
Llandudno, Clwyd, UK

Llandudno Triathlon & Duathlon | Standard Triathlon

  • 1500 m sea swimming
  • 34.75 km road cycling + 2979 ft ascent
  • 9.4 km road running + 52 ft ascent
  • Sat 4 Oct
Llandudno, Clwyd, UK

Llandudno Triathlon & Duathlon | Sprint Triathlon

  • 750 m sea swimming
  • 17.5 km road cycling + 1568 ft ascent
  • 5 km road running + 26 ft ascent

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