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Triathlons in South East in May 2025

Find triathlons near me in South East in May 2025 - search by date or place, display on a map or use the advanced search to find your perfect race.

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Click an event for full event details, location, route, sustainability, what's included and how to enter.

Take on this multi-activity event and take the opportunity to race around this unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.
  • Sun 25 May
  • £58-£120
  • Sun 25 May
  • £58-£120
Windsor, Buckinghamshire, UK

Dorney Triathlon | May

Take on this multi-activity event and take the opportunity to race around this unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.

  • Recycling
  • Newcomers
  • Event village
  • Sustainability policy
  • Age 15 & over
  • Super sprint triathlon
  • Sprint triathlon
  • Olympic triathlon
  • Sprint aquabike
  • Standard aquabike
Incorporating Sprint Triathlon 2026 World Championships Qualifier! Dorney Lake Events provides you with an opportunity to race like an elite around this unique and inspiring Olympic venue.
  • Sun 25 May
  • £80
  • Sun 25 May
  • £80
Windsor, Buckinghamshire, UK

Dorney Lake Draft-Legal Triathlon

Incorporating Sprint Triathlon 2026 World Championships Qualifier! Dorney Lake Events provides you with an opportunity to race like an elite around this unique and inspiring Olympic venue.

  • Newcomers
  • Enter online
  • Flat
  • Event village
  • Age 15 & over
  • 750 m lake swimming
  • 19 km road cycling
  • 5 km road running
Take on this multi-activity event and take the opportunity to race around this unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.
  • Wed 28 May
  • £58-£78
  • Wed 28 May
  • £58-£78
Windsor, Buckinghamshire, UK

Midweek Dorney Triathlon | May

Take on this multi-activity event and take the opportunity to race around this unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.

  • Newcomers
  • Event village
  • Sustainability policy
  • Age 15 & over
  • Super sprint triathlon
  • Sprint triathlon
  • Sprint aquabike
  • Mon 5 May
Winchester, Hampshire, UK

Winchester Triathlon

  • Kids triathlon
  • Novice triathlon
  • Sprint triathlon
  • Mon 5 May
Tonbridge, Kent, UK

Tonbridge Triathlon

  • Sprint aquathlon
  • Sprint aquabike
  • Sprint triathlon
  • Olympic triathlon
  • Sun 11 May
Ringwood, Hampshire, UK

The Huntsman Triathlon

  • Middle aquabike
  • Sprint duathlon
  • Sprint triathlon
  • Olympic triathlon
  • Half Ironman
  • Sun 11 May
East Grinstead, West Sussex, UK

The East Grinstead Triathlon

  • Novice triathlon
  • Sprint triathlon
  • Sprint aquabike
  • Sun 18 May
Arundel, West Sussex, UK

Lezyne Arundel Lido Triathlon

  • Sprint triathlon
  • Olympic triathlon
  • Sprint aquabike
  • Standard aquabike
  • Sun 18 May
Banbury, Oxfordshire, UK

Banbury Triathlon

  • Sprint triathlon
  • Sprint aquabike
  • Super sprint triathlon
  • Sun 18 May
Sevenoaks, Kent, UK

7Oaks Triathlon/Aquabike/Duathlon

  • Sprint triathlon
  • Sprint aquabike
  • Sprint duathlon
  • Sun 25 May
Wadhurst, East Sussex, UK

Bewl Water Triathlon

  • Sprint triathlon 2
  • Olympic triathlon 2
  • Super sprint triathlon
  • Sprint aquabike
  • Standard aquabike
  • Sat 31 May
Henley-on-Thames, Oxfordshire, UK

Henley Kids Fun Triathlon

  • Kids triathlon 9

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