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Half Ironman (middle distance) in Gwynedd

Find half ironman (middle distance) in Gwynedd 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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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 over a Middle distance tri.
  • Sun 14 Jun
  • £239.99-£259.99
Caernarfon, Gwynedd, UK

Slateman Legend (70.3) Triathlon

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 over a Middle distance tri.

  • 1900 m lake swimming
  • 92.6 km road cycling + 4297 ft ascent
  • 23.1 km trail running + 2723 ft ascent
  • Chip timing
  • Enter online
  • Hilly
  • Mountainous
  • Age 18 & over
The Legend returns to Bala for the first time since 2017 and it’s ready to challenge and inspire like never before. This is your chance to go further, dig deeper, and achieve something extraordinary.
  • Sun 6 Sep
  • £239.99-£259.99
Bala, Gwynedd, UK

Triathlon Y Bala | Legend (70.3) Middle Distance

The Legend returns to Bala for the first time since 2017 and it’s ready to challenge and inspire like never before. This is your chance to go further, dig deeper, and achieve something extraordinary.

  • 1900 m lake swimming
  • 85 km road cycling
  • 21.1 km road running
  • Chip timing
  • Enter online
  • Flat
  • Traffic free
  • Age 18 & over
An unforgettable adventure triathlon, The Sandman has been described as one of the most beautiful and thrilling multi-terrain races in the UK, featuring the Middle Distance National Championships.
  • Sun 27 Sep
  • £239.99-£259.99
Llanfairpwllgwyngyll, Isle of Anglesey, UK

Superfeet Sandman Legend (70.3) Triathlon

An unforgettable adventure triathlon, The Sandman has been described as one of the most beautiful and thrilling multi-terrain races in the UK, featuring the Middle Distance National Championships.

  • 1900 m sea swimming
  • 93 km road cycling + 912 m ascent
  • 20 km multi terrain running + 176 m ascent
  • Chip timing
  • Enter online
  • Undulating
  • Age 18 & over
  • Sat 9 May
  • £250-£270
Pwllheli, Gwynedd, UK

THE ROC WALES

  • 1.5 km sea swimming
  • 100 km road cycling
  • 13 km multi terrain running + 3330 ft ascent

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