Triathlons in East of England

• Sun 3 May 2026
• £55-£117

ATW St Neots Triathlon | Race 1

Stunning riverside venue! Swim in the beautiful River Ouse, cycle through scenic villages and run around Riverside Park in a triathlon or aquabike event of your choice.

• Newcomers
• Event village
• Park
• Age 15 & over

• Super sprint triathlon
• Sprint triathlon
• Olympic triathlon
• Standard aquabike

• Sun 10 May 2026
• £44-£49

HSV Sprint Triathlon & Aquabike

This is a great race for all standards, from the absolute beginner right through to the seasoned triathlete. The course is fast, flat and has great PB potential.

• Newcomers
• Event village
• Urban
• Age 15 & over

• Sprint triathlon
• Sprint aquabike

• Sat 16 May 2026
• £78-£178

ATW Big East & Maldon Triathlon

The Big East and Maldon Triathlon is brought to you by the largest triathlon organiser in the UK! A great experience featuring a tidal river swim.

• Newcomers
• Event village
• Park
• Age 15 & over

• Sprint triathlon
• Olympic triathlon
• Standard aquabike
• Half Ironman
• Middle aquabike

• Sun 24 May 2026
• £65-£137

ATW Box End Triathlon

Experience a choice of multi-sport events — triathlon, relay triathlon and aquabike — at a stunning watersports venue with pristine water, scenic routes, a custom medal and more.

• Newcomers
• Event village
• Park
• Age 15 & over

• Sprint triathlon
• Sprint aquabike
• Olympic triathlon
• Standard aquabike
• Half Ironman
• + 1 more race

• Sun 7 Jun 2026
• £140-£180

ATW Grafman Middle Distance Triathlon & Aquabike

One of the country’s most popular middle distance swim-bike-run events, delivered by triathletes for triathletes, at the beautiful and iconic Grafham Water.

• Recycling
• Newcomers
• Event village
• Park
• Rural
• Sustainability policy
• Age 18 & over

• Half Ironman
• Middle aquabike

• Sun 21 Jun 2026
• £64-£117

ATW Stewartby Lake Triathlon & Aquabike

Dive into the ATW Stewartby Lake Triathlon and Aquabike – a flat, fast and friendly race offering stunning lake views, smooth roads, and surefire PB potential.

• Recycling
• Newcomers
• Plastic bottle free
• Event village
• Park
• Sustainability policy
• Age 15 & over

• Sprint triathlon
• Olympic triathlon
• Sprint aquabike
• Standard aquabike

• Sun 21 Jun 2026
• £75-£110

Southend Triathlon

Take on an exciting coastal triathlon in Southend, featuring a sea swim, fast seafront cycle, and scenic run with fantastic crowd support all the way.

• Newcomers
• Event village
• Coast
• Age 18 & over

• Sprint triathlon
• Olympic triathlon
• Relay triathlon
• Standard aquabike

• Sat 8 Aug 2026
• £140-£275
• Early bird

ATW Odyssey Triathlon

Complete your own Odyssey on a journey of self-discovery in the Cambridgeshire countryside featuring a swim in the River Ouse, a scenic ride and a run around the beautiful town of St Neots.

Early bird on now

• Families
• Recycling
• Entertainment
• Music
• Event village
• Park
• Rural
• Sustainability policy
• Age 19 & over

• Ironman
• Half Ironman

• Sat 8 Aug 2026
• £65-£117

ATW St Neots Triathlon | Race 2

Stunning riverside venue! Swim in the beautiful River Ouse, cycle through scenic villages and run around Riverside Park in a triathlon or aquabike event of your choice.

• Newcomers
• Event village
• Park
• Sustainability policy
• Age 15 & over

• Sprint triathlon
• Olympic triathlon
• Standard aquabike
• Sprint aquabike

• Sun 16 Aug 2026
• £54-£95

ATW Oundle Triathlon

ATW is the largest triathlon organiser in the UK and is bringing you the Oundle Triathlon! It doesn’t matter if you are an experienced triathlete or this is your very first attempt at swim-bike-run.

• Newcomers
• Event village
• Age 15 & over

• Super sprint triathlon
• Sprint triathlon
• Sprint aquabike

• Sun 20 Sep 2026
• £55-£115

ATW St Neots Triathlon | Race 3

Stunning riverside venue! Swim in the beautiful River Ouse, cycle through scenic villages and run around Riverside Park in a triathlon or aquabike event of your choice.

• Newcomers
• Event village
• Park
• Sustainability policy
• Age 15 & over

• Super sprint triathlon
• Sprint triathlon
• Olympic triathlon
• Standard aquabike
• Sprint aquabike

• Sat 26 Sep 2026
• £75-£116

ATW Grafham Triathlon

Sprint or Standard Tri or Aquabike, in and around the beautiful, clean reservoir, on a flat course for all abilities with custom-designed medal, free photos and finish line goodies.

• Recycling
• Newcomers
• Event village
• Park
• Sustainability policy
• Age 15 & over

• Sprint triathlon
• Olympic triathlon
• Standard aquabike