Sunday 20 September 2026

Join us for the third event in the 2026 ATW St Neots Triathlon Series — now featuring an exciting new Middle Distance option alongside our much-loved Sprint, Standard and Super Sprint races.

Delivered by triathletes, for triathletes.

Whether you’re chasing a personal best or taking on your very first open water triathlon, ATW St Neots offers the perfect race-day experience in a safe, friendly and professionally delivered environment.

Set in the heart of St Neots, the event begins with a swim in the beautiful River Ouse before athletes head out onto a scenic bike course through the surrounding Cambridgeshire countryside and villages. The run route finishes with a riverside course around Riverside Park, creating a brilliant atmosphere for athletes and spectators alike.

The venue is just a short walk from the town centre, offering easy access to cafés, shops and local amenities.

Race Options

Choose from a range of distances to suit every level of athlete:

Super Sprint Triathlon – 400m swim / 9km bike / 2.5km run

Sprint Triathlon – 750m swim / 24km bike / 5km run

Standard Triathlon – 1500m swim / 46km bike / 10km run

Standard Aquabike – 1500m swim / 46km bike

Middle Distance Triathlon – 2250m swim / 89km bike / 20km run

Middle Distance Aquabike – 2250m swim / 89km bike

There’s also the opportunity to race as part of a relay team in both the Standard and Middle Distance events, with one athlete completing each discipline.

This is a draft-illegal (non-drafting) event.

Event Information

The Middle Distance starts at 7:30am, with the other races joining in from 08:45am - The complete timetable will be published in the Final Race info

Open water river swim

Camping available the night before the event

Easy-access transition and spectator-friendly venue

Camping can be booked via the merchandise tab on this page.

Event cut-offs

The Super-Sprint, Sprint and Standard events have no cut-off times

The Middle-distance Aquabike has an overall cut-off of 5hrs30.

The Middle-distance Tri has the following cut-offs (due to daylight restrictions):

Bike complete by 5hrs30

Total event cut-off of 8hrs30

(If you do not meet these cutoffs you will be asked to reduce the number of laps you complete on the run to enable you to finish safely)

Wetsuit Hire

Need a wetsuit for race day or the season ahead?

We’re proud to offer high-quality Zone3 wetsuit hire options for:

Single event hire

Weekend or monthly hire

Full season hire

Find full details via the Zone3 link on the bottom of this page.

Why Enter ATW St Neots?

One of our most popular late-season events

Scenic River Ouse swim

Fast, well-marked courses

Friendly and supportive marshals

FREE professional event photos

Custom-designed finisher medal

Finish line snacks and goodies

Ideal for beginners and experienced athletes alike

We look forward to welcoming you to St Neots this September.

Read reviews on Racecheck

Charity - Join us in making every stride count by raising money for our partner charity, Alzheimers 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 achievments.

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.