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London Triathlon


London Triathlon

Beginner or pro, join the UK’s Best Multi-Sport Event and run, swim and cycle on this iconic capital city event.


Event Type: Triathlon

Where: London

When: Sat 5 & Sun 6 August 2023

FAQ's: Visit LT Website

Happy Days Charity Places: 2024 PLACES TBC

About the Event

Every year, thousands of people come to our iconic capital city to join our community of incredible triathletes taking on the challenge of the #LondonTri.


The event takes place at the ExCel Centre, Royal Victoria Dock and has a unique urban route, giving participants the chance to swim, bike and run past London’s world-famous landmarks. In 2019, an incredible one in three London Tri entrants were first timers.

There are 4 adult distances available: Super Sprint, Sprint, Olympic and  Olympic Plus. Please see the table for a breakdown of each distance.

You can enter as an individual or as part of a Team Relay in the Sprint and Olympic distance categories. For more information on this please visit the entries page of the website.


Sign up using the links above or for more info, contact Rob Cox on:

Happy Days Charity Place

Sign up HERE for one of our guaranteed places:


  • Registration fee: £30

  • Minimum sponsorship target: £300

Ballot Place

If you have been successful in getting a ballot place in the event via the race organisers we'd love for you to raise sponsorship to help us create special days for amazing children!


There is no registration fee or minimum sponsorship target, just raise as much as you can.

Useful Links

For You

We’ll support you every step of the way and provide you with:

  • Personal Happy Days staff contact to call upon if you need support

  • Choice of projects if you'd like to support children near you with your fundraising

  • A spiffing FREE Happy Days Charity T-Shirt or Running Vest

  • Fundraising materials

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