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Triathlons in South East in July 2025

Find triathlons near me in South East in July 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.
  • Wed 2 Jul
  • £58
  • Wed 2 Jul
  • £58
Windsor, Buckinghamshire, UK

Midweek Dorney Super Sprint Triathlon

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.

  • Chip timing
  • Enter online
  • Flat
  • PB
  • Traffic free
  • Age 15 & over
  • 400 m lake swimming
  • 10 km road cycling
  • 2.5 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 2 Jul
  • £78
  • Wed 2 Jul
  • £78
Windsor, Buckinghamshire, UK

Midweek Dorney Sprint Triathlon

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.

  • Chip timing
  • Enter online
  • Flat
  • PB
  • Traffic free
  • Age 15 & over
  • 750 m lake swimming
  • 20 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.
  • Sun 13 Jul
  • £78
  • Sun 13 Jul
  • £78
Windsor, Buckinghamshire, UK

Dorney Sprint Triathlon

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.

  • Chip timing
  • Enter online
  • Flat
  • PB
  • Age 15 & over
  • 750 m lake swimming
  • 20 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.
  • Sun 13 Jul
  • £99-£120
  • Sun 13 Jul
  • £99-£120
Windsor, Buckinghamshire, UK

Dorney Standard Triathlon

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.

  • Chip timing
  • Enter online
  • Flat
  • PB
  • Age 17 & over
  • 1500 m lake swimming
  • 40 km road cycling
  • 10 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.
  • Sun 13 Jul
  • £58
  • Sun 13 Jul
  • £58
Windsor, Buckinghamshire, UK

Dorney Super Sprint Triathlon

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.

  • Chip timing
  • Enter online
  • Flat
  • PB
  • Age 15 & over
  • 400 m lake swimming
  • 10 km road cycling
  • 2.5 km road running
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 | Full 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
  • 2.4 miles sea swimming
  • 112 miles road cycling
  • 26.2 miles trail running
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
  • Sat 5 Jul
Windsor, Buckinghamshire, UK

FixAddiction Summer Super Sprint Triathlon

  • 400 m lake swimming
  • 20 km road cycling
  • 5 km road running
  • Sat 5 Jul
Windsor, Buckinghamshire, UK

FixAddiction Summer Sprint Triathlon

  • 750 m pool swimming
  • 20 km road cycling
  • 5 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
  • Sun 27 Jul
Windsor, Buckinghamshire, UK

Dorney Triathlon - July | Sprint Triathlon

  • 750 m lake swimming
  • 20 km road cycling
  • 5 km road running
  • Sun 27 Jul
Windsor, Buckinghamshire, UK

Dorney Triathlon - July | Standard Triathlon

  • 1500 m lake swimming
  • 40 km road cycling
  • 10 km road running
  • Sun 27 Jul
Windsor, Buckinghamshire, UK

Dorney Triathlon - July | Super Sprint Triathlon

  • 400 m lake swimming
  • 10 km road cycling
  • 2.5 km road running

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