The World’s biggest triathlon welcomes over 13,000 triathletes to swim, bike and run around London's landmarks. Join the Rethink team today and receive a free top and incredible fundraising support leading up to the event.
You’ll be treated to an unforgettable open water swim in the Thames from London Docklands, wiz through London’s under-pass tunnels (watch out for the climb on the way out!) and a blisteringly fast an all importantly flat run around the impressive 2012 Olympic venue, the Excel.
Each year thousands of supporters bring the noise and add to the energy and incredible atmosphere of the triathlon. Impressive high-rise views of London as well as taking a tour of some of its landmarks await you, but more importantly, be prepared to be pushed to your limits like no other endurance event.
Join some of the world’s best athletes and go toe to toe in Olympic distance triathlon. Hugely popular and must-do distance for any triathlete. It’ll be a challenge, but you know that, yet you can achieve greatness in London with a booming crowd behind you.
Show London what you’re made of.
"I had a fabulous time last year at my first ever Triathlon. A huge learning experience and met some wonderful people. I'm coming back to complete the next level up next year"
"...had a great day this year, looking forward to doing it all over again!"
"Fantastic race - well organised, really enjoyed"
Sign up for a new challenge and support a charity of your choice, even before general entries are open! Each charity will have their own fundraising target and incentives to help you get there. By becoming part of a charity team, you'll get some much-needed support in the run up to the event, on the big day itself and beyond.
The route is made up multiple laps. The opening swim takes place in London Docklands; you’ll then transition to bike inside the Olympic venue of the Excel. You’ll then follow a closed road cycle route taking in some of London’s best land marks roughly following the Thames – this section is made up of multiple laps. A final transition inside the Excel before running in and around the building itself.
Please click here to view the Olympic distance route map
Get instant access to full event details including how to secure your place.
Full details about costs and fundraising.
If you would like any help or advice, please contact our helpdesk.
Rethink Mental Illness improve the lives of people severely affected by mental illness through a network of local groups and services, expert information and successful campaigning with the goal of making sure everyone affected by severe mental illness has a good quality of life.
Mental health support groups and services take place all over the country. From peer to peer support, to an advice and information service, the aim is to ensure people are respected, listened to and get the right kind of support at the right time.
Let’s stamp out stigma and help people severely affected by mental illness together. Sign up to take on an event or challenge for Rethink Mental Illness.
Registered no: 271028.