London T100 2024

A man in the water who is smiling after swimming in the London Triathlon

Take on the London T100 (Formerly Challenge London and London Triathlon) in 2024 for TeamGOSH. Line up on the streets of Britain’s capital and join one of the world’s biggest triathlons.

With various individual distances and relay options to choose from, there's something for everyone.

Event details

Sunday 28 July 2024

ExCeL London, Royal Victoria Dock

Fundraising pledge: £450

Registration fee: £25

About London T100

London T100, formerly known as Challenge London and The London Triathlon, is a multi-discipline sport consisting of swimming, cycling and running over various distances and can be completed as an individual or a team.

London T100 distances

Take on the distance of your choice in London – Super Sprint, Sprint or Olympic. You can compete as an individual or a team.

Individual distances:

  • Super Sprint - 400m swim, 10km cycle and 2.5km run
  • Sprint - 750m swim, 20km cycle and 5km run
  • Olympic - 1.5km swim, 40km cycle and 10km run

Relay distances:

  • Sprint Relay - 750m swim, 20km cycle and 5km run
  • Olympic Relay - 1.5km swim, 40km cycle and 10km run

When is London T100?

London T100 is taking place on Sunday 28 July 2024 at ExCeL London, Royal Victoria Dock.

A man smiles at the camera and flexes his arm muscles after taking on the London Triathlon

Take on London T100 for GOSH Charity

"I found the triathlon physically hard but so rewarding. I feel so proud to have finished it and I loved training for it; it gets you so fit.

I would say to anyone thinking of doing it for Great Ormond Street Hospital Children’s Charity, do it! I am 54 this year and doing my second triathlon, and when you think about the children at GOSH, it is nothing compared to what they go through. So go for it!"

John, previous London Triathlon participant.

Take on London T100 for TeamGOSH and you'll receive:

  • a GOSH Charity top to wear on the day

  • online training guides and advice from top triathletes

  • the chance to win exclusive gear and prizes

  • support on the day

  • fundraising advice, ideas and materials

  • dedicated support from GOSH Charity's Challenge Events team