London Triathlon 2020


NOTE: This event has been been cancelled.

Join #TeamARUK for one for the largest triathlons in the world!

Starting at the London Docklands, this famous triathlon attracts over 11,000 participants and 30,000 spectators. The closed-road urban route passes some of the city’s most iconic landmarks, including; the London Eye, Westminster, London Bridge and the O2. This is one not to be missed!

There are four distances to choose from, with the option of a team relay as well. The London Triathlon caters for all abilities; whether you’re a first-time triathlete or an experienced professional, it’s suitable for everyone.

Enter as an individual

Super Sprint (Saturday) – 400m swim, 10km cycle, 2.5km run
Sprint (Saturday or Sunday) – 750m swim, 20km cycle, 5km run
Olympic (Saturday or Sunday) – 1500m swim, 40km cycle, 10km run
Olympic Plus (Sunday) – 1500m swim, 80km cycle, 10km run

Enter as a team

Sign up as a team of three to take on this triathlon as a relay. Get your Team Captain to register and pay a one off registration fee of £50 for the whole team, we will then get in contact with your Team Captain to register the other members. The joint minimum sponsorship target for the team is £1000. For more information please contact

Sprint Team Relay (Saturday) – 750m swim, 20km cycle, 5km run
Olympic Team Relay (Saturday) – 1500m swim, 40km cycle, 10km run

london triathlon

Find this event

London, London, E16 1XL, United Kingdom.

When you join #TeamARUK you’ll receive:

  • Help and support from a dedicated fundraising team.
  • A fundraising pack bursting with hints and tips.
  • A free Alzheimer’s Research UK running vest or technical t-shirt.
  • Access to fundraising materials, cheer packs for friends and family, and more.

If you have any questions or would like further information, please contact the Fundraising team.

If you like what you see but can’t make this event, why not check out our full events calendar and find something that suits you? Click here to explore.


Our work isn’t possible without amazing supporters like you, and by taking part for Alzheimer’s Research UK you’re funding pioneering research to change the lives of people with dementia and their families.

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