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Ironman (full distance) in North Wales in Summer

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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 full Iron distance.
  • Sun 14 Jun 2026
  • £419.99-£449.99
Caernarfon, Gwynedd, UK

Slateman Triathlon & Duathlon | Slateman Ultra (140.6) 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 full Iron distance.

  • Chip timing
  • Enter online
  • Hilly
  • Mountainous
  • Age 19 & over
  • 2.4 miles lake swimming
  • 180 km road cycling + 2679 m ascent
  • 44.5 km trail running + 2126 m ascent

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