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ATW is the largest triathlon organiser in the UK and we are bringing you the Oundle Childrens Triathlon!

It doesn’t matter if your child is the next budding Alex Yee or Georgia Taylor-Brown, or this is their very first attempt at a triathlon… this is an ideal event for them.

This is an opportunity to race in one of only a handful of indoor 50m pools in the country before completing the bike and run in the grounds of the exclusive Oundle School.

The swim will be a 'snake swim' in a 50m pool, with the fastest swimmers starting first. Each competitor's timing will not start until they commence their swim. (You will be asked on the entry form to predict your child's swim time. This is to ensure that they are seeded in the correct position in the swim. Its not much fun to be held up by lots of swimmers in front, nor being constantly caught from behind, so please try to be as accurate as possible in your prediction)

The transition will be on the grass.

The bike will complete 2km laps of the playing fields (the Tristart event will have an 800m cut off) on smooth grass

The run will complete 600m laps on a tarmac path that loops around the tennis courts.

The event will finish on the playing fields where all finishers will receive their medals, water and goodies.

Every child will be individually chip-timed whilst tackling the following distances (ages as at 31/12/2026):

Tristart – 8 yrs old: 50m swim – 800m bike – 600m run

Tristar1 – 9-10 yrs old: 150m swim – 2km bike – 1.2km run

Tristar2 – 11-12 yrs old: 200m swim – 4km bike – 1.8km run

Tristar3 – 13-14 yrs old: 300m swim – 6km bike – 2.4km run

Youth – 15-16 yrs old: 400m swim – 8km bike – 3km run

(Note that if you are over 15 on race day, then you can choose to compete in the adult race (400m swim – 13km open road bike – 2.6km run) that is held in the morning.)

All competitors must provide their own helmet and bike.

Reasons to enter this event:

Stunning venue

Great location

Well marked course

Supportive marshals

Spectator friendly

FREE event photos

Custom designed medal

Finish line snacks & goodies

Read reviews on Racecheck

Charity - Join us in making every stride count by raising money for our partner charity, Alzheimer's Research UK - your run will not only challenge your limits but also change lives, one step at a time, for a cure. Opportunities to donate and fundraise will appear at checkout.

ATW Transfer & Refund Policy

At ATW, we understand that sometimes plans change. While we do not offer refunds or transfers to another person, we provide a hassle-free event transfer option for those unable to attend their booked event. If you are unable to participate in your scheduled event for any reason—including injury, illness, pregnancy, bereavement, or other unforeseen circumstances—you can transfer your entry to any future ATW event. There is no proof required, we trust you!

Even better news, transfers can be made all the way up to 48 hours before your original event date.

ATW Community

At ATW we think of our participants as a community and we love to hear about the community's dreams and achievements.

If you'd like to share those dreams and achievements you can do so on any of our social media platforms. Equally if you'd like any advice about your upcoming event you will almost certainly find someone who can provide some guidance.

Links to all our social media platforms are at the bottom of the page, including to our ATW Chat Facebook group, which might be the most interactive platform if asking for help.

Event Organiser

ATW was established in 2011 by James Shipley. We have now become a national events company in the UK, specialising in Running, Triathlon, Duathlon, Aquathon, Cycling, Swimming and all permutation of swim-bike run events. With over 40,000 entries a year ATW has become a firm favourite amongst people who are determined to Dream, Believe and Achieve.

Description supplied by the event organiser.