The AJ Bell London Triathlon
Charity entries are closed
Please check back for more details of the 2019 event.
Got a place already?
Request your sponsorship pack and join our team.
Join our team and take part in the AJ Bell London Triathlon the world's biggest and most iconic triathlon.
Taking place on both the 4th and 5th August at the London Docklands, this triathlon attracts over 13,000 participants and is one not to be missed. Sign up today and swim, run & cycle around this spectacular route. There are 4 distances available and the opportunity to enter as a team relay, so whether this is your first triathlon or you are looking to smash your PB, you're guaranteed to have an amazing time.
SuperSprint (400m swim, 10km cycle, 2.5km run)
Sprint (750m swim, 20km cycle, 5km run)
Olympic (1500m swim, 40km cycle, 10km run)
Olympic Plus (1500m swim, 80km cycle, 10km run)
Join forces with the team that will get you to the finish line. United we are stronger than cancer. Take part in the London Triathlon and raise money to help us beat cancer sooner.
Race day information
Any questions? Click here to read our most frequently asked questions, which should provide you with all the information you need. Or, you can contact the Sports Team on 0300 123 5461.
Did you know...
Cancer Research UK completed the first UK trials of a new generation of highly targeted cancer drugs, known as PARP inhibitors, for people with breast and ovarian cancers caused by inherited gene faults.
Support for you
Set up a Cancer Research UK Giving page
Training plans and advice
We've teamed up with the experts to give you the very best training support and advice for your event.