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Olympic triathlons (standard distance) in South East in September 2025

Find olympic triathlons (standard 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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Select an event for photos, video, route, location, reviews, entry fees and how to enter.

The Olympic venue, Eton Dorney, offers pan-flat, traffic-free roads and a beautiful clear lake for Standard-distance triathletes to enjoy in an exclusive setting.
  • Sun 21 Sep
  • £82-£97
  • Sun 21 Sep
  • £82-£97
Windsor, Buckinghamshire, UK

Eton Dorney Standard Triathlon

The Olympic venue, Eton Dorney, offers pan-flat, traffic-free roads and a beautiful clear lake for Standard-distance triathletes to enjoy in an exclusive setting.

  • Chip timing
  • Enter online
  • Flat
  • Traffic free
  • Age 17 & over
  • 1.5 km lake swimming
  • 40 km road cycling
  • 10 km trail 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.
  • Sat 27 Sep
  • £99-£120
  • Sat 27 Sep
  • £99-£120
Windsor, Buckinghamshire, UK

Dorney Triathlon | September | 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
Great Britain Age Group 2026 Team Qualifier. Get active in the award-winning grounds and surrounding Kent countryside in an Olympic Triathlon in an event for all ability levels then celebrate after!
  • Sun 28 Sep
  • £125-£165
  • Sun 28 Sep
  • £125-£165
Edenbridge, Kent, UK

Hever Castle | Olympic Triathlon

Great Britain Age Group 2026 Team Qualifier. Get active in the award-winning grounds and surrounding Kent countryside in an Olympic Triathlon in an event for all ability levels then celebrate after!

  • Chip timing
  • Enter online
  • Age 17 & over
  • 1.5 km lake swimming
  • 40 km road cycling
  • 10 km road running
  • Sun 7 Sep
Bexhill-on-Sea, East Sussex, UK

The 1066 Triathlon | Standard Triathlon

  • 1500 m sea swimming
  • 40 km road cycling + 955 ft ascent
  • 10 km road running
  • Sun 21 Sep
Henley-on-Thames, Buckinghamshire, UK

The One on the River | Henley | Standard Triathlon

  • 1500 m river swimming
  • 54 km road cycling
  • 10 km trail running

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