44

Triathlons in South East

Find triathlons near me in South East for 2025/2026 - filter by date or location, display on a map or use the advanced search to find your perfect race.

Filter by month

Filter by place

Map

Event listings

Select an event for photos, video, route, location, reviews, entry fees and how to enter.

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
Award winning full and middle-distance triathlons, plus a marathon, long-distance swims, aquabike options and triathlon relays.
  • Sun 20 Jul
  • Sun 20 Jul
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
  • Sun 20 Jul
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
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
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
  • £58
  • Sun 27 Jul
  • £58
Windsor, Buckinghamshire, UK

Dorney Triathlon | July | Super 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
  • 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.
  • Sat 9 Aug
  • £78-£99
  • Sat 9 Aug
  • £78-£99
Windsor, Buckinghamshire, UK

Dorney Triathlon | August | 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 a multi-activity event and take the opportunity to race around this unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.
  • Sat 9 Aug
  • £99-£120
  • Sat 9 Aug
  • £99-£120
Windsor, Buckinghamshire, UK

Dorney Triathlon | August | Standard

Take on a 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
  • Age 17 & over
  • 1500 km 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.
  • Sat 9 Aug
  • £58
  • Sat 9 Aug
  • £58
Windsor, Buckinghamshire, UK

Dorney Triathlon | August | Super 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
  • 400 m lake swimming
  • 10 km road cycling
  • 2.5 km road running
It’s big. It’s bold. It’s the UK’s one and only disability sports series for the Everyday Superhero! There are many super ways to take part in these super-fun and flexible tri challenges.
  • Sat 16 Aug
  • 1 charity
  • Sat 16 Aug
  • 1 charity
Windsor, Berkshire, UK

Superhero Tri powered by Marvel | Sprint

It’s big. It’s bold. It’s the UK’s one and only disability sports series for the Everyday Superhero! There are many super ways to take part in these super-fun and flexible tri challenges.

  • Enter online
  • Flat
  • Traffic free
  • Age 5 & over
  • 150 m lake swimming
  • 3 km road cycling
  • 1 km road running
It’s big. It’s bold. It’s the UK’s one and only disability sports series for the Everyday Superhero! There are many super ways to take part in these super-fun and flexible tri challenges.
  • Sat 16 Aug
  • 1 charity
  • Sat 16 Aug
  • 1 charity
Windsor, Berkshire, UK

Superhero Tri powered by Marvel | Half

It’s big. It’s bold. It’s the UK’s one and only disability sports series for the Everyday Superhero! There are many super ways to take part in these super-fun and flexible tri challenges.

  • Enter online
  • Flat
  • Traffic free
  • Age 9 & over
  • 400 m lake swimming
  • 10 km road cycling
  • 2.5 km road running
It’s big. It’s bold. It’s the UK’s one and only disability sports series for the Everyday Superhero! There are many super ways to take part in these super-fun and flexible tri challenges.
  • Sat 16 Aug
  • 1 charity
  • Sat 16 Aug
  • 1 charity
Windsor, Berkshire, UK

Superhero Tri powered by Marvel | Full

It’s big. It’s bold. It’s the UK’s one and only disability sports series for the Everyday Superhero! There are many super ways to take part in these super-fun and flexible tri challenges.

  • Enter online
  • Flat
  • Traffic free
  • Age 9 & 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.
  • Wed 27 Aug
  • £58
  • Wed 27 Aug
  • £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 27 Aug
  • £78
  • Wed 27 Aug
  • £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 the fast and flat traffic-free route from Hove Lawns along the famous seafront promenade! Well established as one of the biggest events in the triathlon calendar.
  • Sun 31 Aug
  • 1 charity
  • Sun 31 Aug
  • 1 charity
Brighton, East Sussex, UK

Brighton and Hove Triathlon | Super Sprint Triathlon

Take on the fast and flat traffic-free route from Hove Lawns along the famous seafront promenade! Well established as one of the biggest events in the triathlon calendar.

  • Chip timing
  • Enter online
  • Flat
  • Traffic free
  • Age 17 & over
  • 300 m sea swimming
  • 10 km road cycling
  • 2.5 km road running
Take on the fast and flat traffic-free route from Hove Lawns along the famous seafront promenade! Well established as one of the biggest events in the triathlon calendar.
  • Sun 31 Aug
  • 1 charity
  • Sun 31 Aug
  • 1 charity
Brighton, East Sussex, UK

Brighton and Hove Triathlon | Sprint Triathlon

Take on the fast and flat traffic-free route from Hove Lawns along the famous seafront promenade! Well established as one of the biggest events in the triathlon calendar.

  • Chip timing
  • Enter online
  • Flat
  • Traffic free
  • Age 15 & over
  • 750 m sea swimming
  • 20 km road cycling
  • 5 km road running
Take on the fast and flat traffic-free route from Hove Lawns along the famous seafront promenade! Well established as one of the biggest events in the triathlon calendar.
  • Sun 31 Aug
  • 1 charity
  • Sun 31 Aug
  • 1 charity
Brighton, East Sussex, UK

Brighton and Hove Triathlon | Standard Triathlon

Take on the fast and flat traffic-free route from Hove Lawns along the famous seafront promenade! Well established as one of the biggest events in the triathlon calendar.

  • Chip timing
  • Enter online
  • Flat
  • Traffic free
  • Age 17 & over
  • 1500 m sea swimming
  • 40 km road cycling
  • 10 km road running
Book Your Spot for the Woking Super Sprint Triathlon! Join one of the most popular triathlons in the area, where athletes return year after year!
  • Sun 14 Sep
  • £49.50
  • Sun 14 Sep
  • £49.50
Woking, Surrey, UK

Woking Autumn Triathlon & Junior Aquathlon | Super Sprint Triathlon

Book Your Spot for the Woking Super Sprint Triathlon! Join one of the most popular triathlons in the area, where athletes return year after year!

  • Enter online
  • Flat
  • Age 15 & over
  • 200 m pool swimming
  • 13.6 km road cycling + 128 ft ascent
  • 3.3 km trail running + 49 ft ascent
Book Your Spot for the Woking Sprint Triathlon! Join one of the most popular triathlons in the area, where athletes return year after year!
  • Sun 14 Sep
  • £59.50-£74.50
  • Sun 14 Sep
  • £59.50-£74.50
Woking, Surrey, UK

Woking Autumn Triathlon & Junior Aquathlon | Sprint Triathlon

Book Your Spot for the Woking Sprint Triathlon! Join one of the most popular triathlons in the area, where athletes return year after year!

  • Enter online
  • Flat
  • Age 15 & over
  • 400 m pool swimming
  • 20.6 km road cycling + 249 ft ascent
  • 5 km trail running + 75 ft ascent
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 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
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 | Sprint Plus Triathlon

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 | Sprint Triathlon

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 + 819 ft ascent
  • 5 km road running

Search options

Back to search options