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Half Ironman (middle distance) in London in August 2025

Find half ironman (middle distance) near me in London in August 2025 - search by date or place, display on a map or use the advanced search to find your perfect race.

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Formerly The London Triathlon, this is one of the world’s biggest triathlons where athletes will race through the capital on a landmark-filled route. London is calling!
  • Sat 2 Aug 2025
  • £264
  • Sat 2 Aug 2025
  • £264
London, UK

London T100 | 100km

Formerly The London Triathlon, this is one of the world’s biggest triathlons where athletes will race through the capital on a landmark-filled route. London is calling!

  • Chip timing
  • Enter online
  • Traffic free
  • Age 17 & over
  • 2 km dock swimming
  • 80 km road cycling
  • 18 km road running

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