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Relay triathlons in South East in July 2025

Find relay 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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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 Triathlon | July | Sprint

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 Triathlon | July | Standard

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
Swim, bike, run your way from Windsor Castle to Brighton on this unique, non-competitive, point-to-point adventure through the North & South Downs. Fully way-marked (no navigation) and full support.
  • Sat 19 Jul
  • £265-£295
  • Sat 19 Jul
  • £265-£295
Windsor, Buckinghamshire, UK

Castle To Coast Triathlon

Swim, bike, run your way from Windsor Castle to Brighton on this unique, non-competitive, point-to-point adventure through the North & South Downs. Fully way-marked (no navigation) and full support.

  • Newcomers
  • Chip timing
  • Enter online
  • Event village
  • Rural
  • Age 18 & over
  • 1.2 miles lake swimming
  • 67 miles road cycling + 3550 ft ascent
  • 14 miles trail running + 1512 ft ascent
Take on a multi-activity or distance event and take the opportunity to race around this unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.
  • Sun 27 Jul
  • FREE-£99
  • Sun 27 Jul
  • FREE-£99
Windsor, Buckinghamshire, UK

Dorney Triathlon | July | Sprint

Take on a multi-activity or distance 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 a multi-activity or distance event and take the opportunity to race around this unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.
  • Sun 27 Jul
  • £99-£120
  • Sun 27 Jul
  • £99-£120
Windsor, Buckinghamshire, UK

Dorney Triathlon | July | Standard

Take on a multi-activity or distance 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

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