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Half Ironman (middle distance) in South East

Find half ironman (middle distance) near me in South East for 2025/2026 - search by date or place, display on a map or use the advanced search to find your perfect race.

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Award winning full and middle-distance triathlons, plus a marathon, long-distance swims, aquabike options and triathlon relays.
  • Sun 20 Jul
  • 1 charity
  • Sun 20 Jul
  • 1 charity
Eastbourne, East Sussex, UK

TriBourne Festival of Endurance | Middle Distance Triathlon

Award winning full and middle-distance triathlons, plus a marathon, long-distance swims, aquabike options and triathlon relays.

  • Enter online
  • Age 18 & over
  • 1.2 miles sea swimming
  • 56 miles road cycling
  • 13.1 miles trail running
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 Triathlon and Multisport Festival | Triathlon Gauntlet

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
  • 21 km road running
  • Sat 19 Jul
Windsor, Buckinghamshire, UK

Castle To Coast Triathlon

  • 1.2 miles lake swimming
  • 67 miles road cycling
  • 14 miles trail running

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