SuperTri Children’s, Youth & Junior Open Water Triathlon

The event takes place at Dorney Lake, Eton (a leading venue for Senior and Elite triathlon events) giving young people the opportunity to feel what it is like to compete on a grand stage. Dorney Lake was the venue for the rowing and kayak events in the Olympic and Paralympic Games in 2012.

Cost:£19 - £38
Event Time:12:30 pm
Event Date:13 August 2016
Event Distance: Various


A triathlon is one of the trickiest and most difficult types of event you can try, but the challenge is what makes it great. It comprises of a swimming section, followed by a large bicycle ride, and finally a long stretch of running.

For anyone who has ever done an event involving one sport, such as a 10K run, and found themselves bored by the end, a triathlon might be the exciting fitness challenge you’ve been looking for! Combining three sports – swimming, cycling and running, a triathlon provides a varied and challenging workout that test your fitness and endurance across multiple disciplines.


Find a Traithlon near you


Sprint | Super Sprint | Olympic | Half Ironman | Ironman


What is a triathlon made up of?

The distance of a triathlon can vary, but the race will always begin with a swim start. Depending on the length of the course this could be in a swimming pool or an open water swim such as a lake or sea. 

The swimming section of the triathlon is then followed by a cycling section – beginners don’t need to splash out on an expensive new bike, if you already own a mountain bike you can use that for your first few races! The cycling section is considered by many triathletes to be the most challenging part of the endurance event, with standard triathlon courses incorporating a 40km bike leg.

The final leg of the triathlon is a run. Again, the distance will vary depending on the length of the course, but a 10k run is considered standard for a triathlon. 

Between stages there is also a transition, which is often referred to as the fourth discipline. The transition area is where you change your kit between stages, for example switching from your cycling gear to your running shoes. The time it takes you to do this is counted as part of your total triathlon time, so serious triathletes will have got their transitions down to a fine art.

What are the benefits of taking part in a triathlon?

Triathlons are great for those who are looking to improve their fitness, lose weight but don’t like the idea of doing a regular marathon of running event. The varied stages keep training and competing challenging and interesting, providing a total body workout. Those prone to running injuries may also benefit from the swimming and cycling sections, as the movements are lower impact on joints.

Regardless of sprint length, triathlons are typically divided into age groups. This means that you will be competing alongside other triathletes who fall into the same band for age and sex as you, with the exception of triathletes who fall into the separate elite category.

Top Triathlon Events in 2020

We have picked out the best events taking place in 2019. We have lots more listings available, just click on the 'Triathlons' tab at the top of this page to find them.

Ironman UK Wales

This event is well established as having one of the most challenging bike and run courses on the IRONMAN calendar.  It also boasts the most spectacular swim location of any IRONMAN event, and the inspiration gained from one of the most vocal and enthusiastically-supported events with tens of thousands of spectators who turn out for race day on all three disciplines.

Find out more about the Ironman Wales event here

Ironman Wales - Triathlon Event


Early Bird pricing now available for a limited time only!

  • 15 – 16 years Youth HIGH PERFORMANCE DRAFTING Triathlon: 400m Swim, 10.6km Bike, 2.5km Run £38
  • 13 – 14 years (Tristar 3) HIGH PERFORMANCE DRAFTING Triathlon: 300m Swim, 10.6km Bike, 2.5km Run £38
  • 15 – 18 years Youth & Junior Triathlon: 400m Swim, 10.6km Bike, 2.5km Run £38
  • 13 – 14 years Triathlon: 300m Swim, 10.6km Bike, 2.5km Run £34
  • 11 & 12 years Triathlon: 200m Swim, 5.3km Bike, 1.8km Run £34
  • 9 & 10 years Triathlon: 100m Swim, 3km Bike, 1km Run £34
  • 8 years Triathlon: 100m Swim, 1.5km Bike, 600m Run £34
  • Scootathlon: 390m Scoot, 390m Bike, 250m Run £19
  • NEW! Parent and Child Relay Scootathlon: Adult (390m scoot, 250m run) and Child (390m Scoot, 390m Bike, 250m Run) £19

N.B. Adult scooters will be provided for the Scootathlon Relay


The High Performance Drafting race is for those more experienced triathletes who are members of the British Triathlon Federation (BTF). High Performance Drafting entrants must provide their BTF (Triathlon England, Triathlon Scotland or the Welsh Triathlon Association) race licence number on the online entry form and show their licence at registration on the day.

The biking and running are all on closed roads so there’s no worry about traffic. All participants are considered winners for taking part and taking on the prospect of a 100, 200, 300 or 400m open water swim followed by a 1.5, 3, 5.3 or 10.6km bike ride and 600m, 1, 1.8 or 2.5km run.

The Scootathlon is a mini fun triathlon children between the ages of 4 and 8 where they scoot, bike and run. Boys will race with Girls at the same time in various age categories.



  • Iconic Olympic venue
  • Clean, calm lake waters
  • Perfect venue and course for your first triathlon
  • Fast, flat closed road bike and run course
  • Renowned for its electric and supportive atmosphere
  • Several vantage points for spectators and supporters


  • Water station on the course and at the finish
  • Medals for all finishers
  • Free Parking
  • Electronic chip timing
  • Results texted to your mobile phone as you cross the line
Event Location : Windsor, Dorney Lake, SL4

51.4937557, -0.66348360000006

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