The London T100 Triathlon, formerly Challenge London, is one of the largest triathlons in the world and the only registered triathlon to take place in the centre of London available for public entry.
Up for a challenge? The London T100 Triathlon gives you the best opportunity to take a tour of Westminster on the move. Ride by Big Ben, the London Eye and the Houses of Parliament on route.
We have now closed applications for the London T100 triathlon and no longer have places available.
If you already have a place in the event and would like to run for Against Breast Cancer, complete the form below and we’ll be in touch.
When you join our team, you will be making a big difference in helping us continue our vital research into the secondary spread of breast cancer.
Our runners receive all the support and encouragement they need from our team, and as part of our commitment to you, we will…
- Provide you with appropriate training plans and advice
- Advise and assist you with your fundraising
- Send you a fundraising pack and fundraising materials
This is just one of the charity triathlons that we offer.