With less than a month to go until the 2024 Royal Windsor Triathlon, final planning has stepped up for Sunday 9 June.


After a significant increase in demand vs 2023, the 2024 event is now sold out. Registrations have been confirmed and items ordered for all participants.

We’re sorry, but we are unable to accept any further entries, but you can register for 2025 updates here.


The official 2024 Participant Guide will be released by Friday 17th May. This contains important information you will need to know, so please take some time to read through it thoroughly (even if you have participated previously). As well as being available through this website, you will receive an email with a direct link to download the guide.

If you have not received any of our emails you can find versions of them on our dedicated email page.


Water safety is always one of our biggest concerns, with no risks taken before an event of this pedigree. As there have been some recent media headlines highlighting campaigns to improve conditions in the Thames, we felt it was important to invest in extra testing this year.

Test samples were taken and sent to SwimSafety on Wednesday 8th May, with the laboratory microbiology results coming back as easily passing in all areas. We will conduct a further laboratory test (this is our usual one the week leading up to the event) to check nothing has changed, but currently all looks positive. In the unlikely circumstance that a future test does not pass, we will switch to a BTF approved duathlon. The delivery team have plans ready to go if required, but the desire is to give the full Royal Windsor Triathlon experience.

Open water swimming in any environment does come with inherent risks, so please do follow the advice provided in our guides and take any precautions necessary to your personal situation.


Check out our new bike course maps, split for each distance.

Please note that the Olympic distance will feature a 2nd lap of the top loop of the course. Please make sure that you study the course map and familiarise yourself with where the 2 decision points are for when you will do this, and make sure you keep your head up and look out for these on the day. These locations will also be signed. Make sure you do not just follow those in front of you and rely on them to wayfind for you as they may not be reading the course correctly, or may be on a different lap.


The 2024 medal is a beauty, and yours will be waiting at the finish line. Featuring the iconic world-famous castle, the medal has a slot in the back to add a personalised time insert (iTab) should you wish.