6 Triathlons in Wales in September 2023

Find triathlons in and around Wales in September 2023 - filter events by date, display on a map or use the advanced search to find your perfect race.

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  • Sat 9 Sep
  • £175-£550
Caernarfon, Gwynedd, UK

The Brutal Extreme Triathlon

Take on one of the World’s Toughest Triathlons…

  • Half Ironman
  • Ironman 2
  • Sat 2 Sep
  • £69.95-£110
Saundersfoot, Pembrokeshire, UK

Saundersfoot Triathlon

The Saundersfoot Triathlon will take place in Saundersfoot, Pembrokeshire. A great sprint distance for athletes for all ability's.

  • 750 m sea swimming
  • 20 km road cycling
  • 5 km multi terrain running
  • Sun 10 Sep
  • £35
Neath, West Glamorgan, UK

Neath Valley Triathlon

This is the 13th year Celtic Tri has run this event, and its always a great success.

  • 400 m pool swimming
  • 22 km road cycling
  • 3 km road running
  • Sat 16 Sep
  • £210
Pwllheli, Gwynedd, UK

The Roc Wales | Summer

This epic endurance triathlon challenge boasts euphoric support, motivating camaraderie and inspiring ambitious athletes taking on The Roc Wales; Abersoch Bay to Snowdon's summit and back.

  • 1.5 km sea swimming
  • 100 km road cycling
  • 13.5 km trail running