London T100 - 100k, Olympic, Sprint, or Super Sprint 2024!


London is calling! Line up on the streets of Britain’s capital and join one of the world’s biggest triathlons.

Following an epic day of racing in 2023 the London Triathlon returns in 2024 under a new name - London T100. The newly branded event will keep all the same distances from last year with the exception of the new 100KM Triathlon replacing the Middle Distance and the introduction of a Pro Race.

This fantastic city centre, closed-road triathlon is designed to soak up the summer sun and take in the London sights. Participants will love the support from the crowds along the course, and there’s a variety of distances for all abilities to get involved in.

How we can support you

We'll be here with you all the way! As a BTF fundraiser, we'll help you to set up a fundraising page on our secure platform. We'll also send you a BTF running vest or T-shirt and lots of tips on how to boost your fundraising. And we can help you promote your fundraiser on social media.

    The difference you will be making


    Register for your place

    Register for the LondonT100 - 100k - 2KM SWIM – 80KM BIKE – 18KM RUN

    Register for the LondonT100 - Sprint 2024 750M SWIM – 20KM BIKE – 5KM RUN

    Register for the LondonT100 - Olympic 2024 - 1.5KM SWIM – 40KM BIKE – 10KM RUN

    Register for the LondonT100 - Super Sprint 2024 - 400M SWIM – 10KM BIKE – 2.5KM RUN

    Please note the deadline date for this event is 7 June 2024

    Already got your own place?

    Awesome! We’d love you to join Team BTF!

    There’s no registration fee or minimum sponsorship. Just raise what you can!

    We'd also love to send you a free running vest or T-shirt*, as well as details of how we can support you.

    Please get in touch

    *If you are doing this challenge as a group, we will supply free T-shirts for up to two participants. Additional BTF T-shirts can be purchased from our online shop