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Triathlons in Gwynedd in September 2025

Find triathlons near me in Gwynedd in September 2025 - filter by date or location, display on a map or use the advanced search to find your perfect race.

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  • 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
  • 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

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