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Triathlons in South East in September 2025

Find triathlons near me in South East in September 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.

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
The Olympic venue, Eton Dorney, offers pan-flat, traffic-free roads and a beautiful clear lake for Sprint triathletes to enjoy in an exclusive setting.
  • Sun 21 Sep
  • £72-£87
  • Sun 21 Sep
  • £72-£87
Windsor, Buckinghamshire, UK

Eton Dorney Sprint Triathlon

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

  • Chip timing
  • Enter online
  • Flat
  • Traffic free
  • Age 15 & over
  • 750 m lake swimming
  • 20 km road cycling
  • 5 km trail running
The Olympic venue, Eton Dorney, offers pan-flat, traffic-free roads and a beautiful clear lake for Super Sprint triathletes to enjoy in an exclusive setting.
  • Sun 21 Sep
  • £62-£77
  • Sun 21 Sep
  • £62-£77
Windsor, Buckinghamshire, UK

Eton Dorney Super Sprint Triathlon

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

  • Chip timing
  • Enter online
  • Flat
  • PB
  • Traffic free
  • Age 15 & over
  • 450 m lake swimming
  • 10 km road cycling
  • 2.5 km trail running
Get active in the award-winning grounds and surrounding Kent countryside in a Sprint Aquathlon! Recruit your friends and celebrate completing your challenge in the festival village.
  • Sat 27 Sep
  • £50
  • Sat 27 Sep
  • £50
Edenbridge, Kent, UK

Hever Castle Triathlon and Multisport Festival | Aquathlon Sprint

Get active in the award-winning grounds and surrounding Kent countryside in a Sprint Aquathlon! Recruit your friends and celebrate completing your challenge in the festival village.

  • Chip timing
  • Enter online
  • Age 15 & over
  • 750 m lake swimming
  • 5 km road running
Get active in the award-winning grounds and surrounding Kent countryside in the a Sprint Plus Triathlon! Recruit your friends and celebrate completing your challenge in the festival village.
  • Sat 27 Sep
  • £115-£155
  • Sat 27 Sep
  • £115-£155
Edenbridge, Kent, UK

Hever Castle Triathlon and Multisport Festival | Triathlon Sprint Plus

Get active in the award-winning grounds and surrounding Kent countryside in the a Sprint Plus Triathlon! Recruit your friends and celebrate completing your challenge in the festival village.

  • Chip timing
  • Enter online
  • Age 17 & over
  • 800 m lake swimming
  • 40 km road cycling
  • 8 km road running
Get active in the award-winning grounds and surrounding Kent countryside in a Sprint Triathlon! Recruit your friends and celebrate completing your challenge in the festival village.
  • Sat 27 Sep
  • £100-£150
  • Sat 27 Sep
  • £100-£150
Edenbridge, Kent, UK

Hever Castle Triathlon and Multisport Festival | Triathlon Sprint

Get active in the award-winning grounds and surrounding Kent countryside in a Sprint Triathlon! Recruit your friends and celebrate completing your challenge in the festival village.

  • Chip timing
  • Enter online
  • Age 15 & over
  • 750 m lake swimming
  • 20 km road cycling
  • 5 km road running
Get active in the award-winning grounds and surrounding Kent countryside in a Super Sprint Triathlon! Recruit your friends and celebrate completing your challenge in the festival village.
  • Sat 27 Sep
  • £95-£145
  • Sat 27 Sep
  • £95-£145
Edenbridge, Kent, UK

Hever Castle Triathlon and Multisport Festival | Triathlon Super Sprint

Get active in the award-winning grounds and surrounding Kent countryside in a Super Sprint Triathlon! Recruit your friends and celebrate completing your challenge in the festival village.

  • Chip timing
  • Enter online
  • Age 15 & over
  • 400 m lake swimming
  • 20 km road cycling
  • 4 km road running
Get active in the award-winning grounds and surrounding Kent countryside in a Starter Triathlon! Recruit your friends and celebrate completing your challenge in the festival village.
  • Sat 27 Sep
  • £80-£120
  • Sat 27 Sep
  • £80-£120
Edenbridge, Kent, UK

Hever Castle Triathlon and Multisport Festival | Triathlon Starter

Get active in the award-winning grounds and surrounding Kent countryside in a Starter Triathlon! Recruit your friends and celebrate completing your challenge in the festival village.

  • Chip timing
  • Enter online
  • Age 15 & over
  • 200 m lake swimming
  • 14 km road cycling
  • 2.5 km road running
Get the family active in the award-winning castle grounds in a triathlon for all abilities - even beginners then celebrate with friends and family in the festival village.
  • Sat 27 Sep
  • £35-£60
  • Sat 27 Sep
  • £35-£60
Edenbridge, Kent, UK

Hever Castle Triathlon and Multisport Festival | Triathlon 9-10 years

Get the family active in the award-winning castle grounds in a triathlon for all abilities - even beginners then celebrate with friends and family in the festival village.

  • Chip timing
  • Enter online
  • Age 9-10
  • 200 m lake swimming
  • 4.2 km road cycling
  • 1.3 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.
  • Sat 27 Sep
  • £78-£99
  • Sat 27 Sep
  • £78-£99
Windsor, Buckinghamshire, UK

Dorney Triathlon | September | Sprint Triathlon

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.
  • Sat 27 Sep
  • £99-£120
  • Sat 27 Sep
  • £99-£120
Windsor, Buckinghamshire, UK

Dorney Triathlon | September | Standard Triathlon

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
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
  • £58
  • Sat 27 Sep
  • £58
Windsor, Buckinghamshire, UK

Dorney Triathlon | September | Super Sprint Triathlon

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
  • 400 m lake swimming
  • 10 km road cycling
  • 2.5 km road running
Get active in the award-winning castle grounds in a triathlon for all abilities - even beginners - then celebrate with friends, family and other athletes in the festival village.
  • Sun 28 Sep
  • £50-£60
  • Sun 28 Sep
  • £50-£60
Edenbridge, Kent, UK

Hever Castle Triathlon and Multisport Festival | Triathlon 15-16 years

Get active in the award-winning castle grounds in a triathlon for all abilities - even beginners - then celebrate with friends, family and other athletes in the festival village.

  • Chip timing
  • Enter online
  • Age 15-16
  • 500 m lake swimming
  • 8.4 km road cycling
  • 2.5 km road running
Get active in the award-winning grounds and surrounding Kent countryside in a Standard Aquathlon! Recruit your friends and celebrate completing your challenge in the festival village.
  • Sun 28 Sep
  • £65
  • Sun 28 Sep
  • £65
Edenbridge, Kent, UK

Hever Castle Triathlon and Multisport Festival | Aquathlon Standard

Get active in the award-winning grounds and surrounding Kent countryside in a Standard Aquathlon! Recruit your friends and celebrate completing your challenge in the festival village.

  • Chip timing
  • Enter online
  • Age 17 & over
  • 1.5 km lake swimming
  • 10 km road 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
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 Triathlon and Multisport Festival | Triathlon Olympic

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
Get the family active in the award-winning castle grounds in a triathlon for all abilities - even beginners then celebrate with friends and family in the festival village.
  • Sun 28 Sep
  • £45-£60
  • Sun 28 Sep
  • £45-£60
Edenbridge, Kent, UK

Hever Castle Triathlon and Multisport Festival | Triathlon 13-14 years

Get the family active in the award-winning castle grounds in a triathlon for all abilities - even beginners then celebrate with friends and family in the festival village.

  • Chip timing
  • Enter online
  • Age 13-14
  • 400 m lake swimming
  • 8.4 km road cycling
  • 2.5 km road running
Get the family active in the award-winning castle grounds in a triathlon for all abilities - even beginners then celebrate with friends and family in the festival village.
  • Sun 28 Sep
  • £40-£60
  • Sun 28 Sep
  • £40-£60
Edenbridge, Kent, UK

Hever Castle Triathlon and Multisport Festival | Triathlon 11-12 years

Get the family active in the award-winning castle grounds in a triathlon for all abilities - even beginners then celebrate with friends and family in the festival village.

  • Chip timing
  • Enter online
  • Age 11-12
  • 300 m lake swimming
  • 4.2 km road cycling
  • 1.8 km road running

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