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Half Ironman (middle distance) in South East in September 2025

Find half ironman (middle distance) near me in South East 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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Not for the faint hearted, this race pushes competitors to their limits whilst visiting every corner of the beautiful castle estate and its surrounding rural area into the High Weald AONB.
  • Sun 28 Sep
  • £245-£295
  • Sun 28 Sep
  • £245-£295
Edenbridge, Kent, UK

Hever Castle | Gauntlet Triathlon

Not for the faint hearted, this race pushes competitors to their limits whilst visiting every corner of the beautiful castle estate and its surrounding rural area into the High Weald AONB.

  • Chip timing
  • Enter online
  • Age 18 & over
  • 1.9 km lake swimming
  • 90 km road cycling + 2392 ft ascent
  • 21 km road running
  • Sun 7 Sep
Bexhill-on-Sea, East Sussex, UK

The 1066 Triathlon | Middle Distance Triathlon

  • 1900 m sea swimming
  • 80 km road cycling + 1910 ft ascent
  • 21 km road running
  • Sun 21 Sep
Henley-on-Thames, Buckinghamshire, UK

The One on the River | Henley | Middle Distance Triathlon

  • 1900 m river swimming
  • 78.5 km road cycling
  • 20 km trail running

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