Welcome to Challenge London, the world’s biggest city centre triathlon!

Open to all abilities, Challenge London offers several distances to get involved in including Super Sprint, Sprint, Sprint Relay, Olympic, Olympic Relay and the brand-new Middle distance.

Early Bird entries are now on sale for this epic event taking over the capital on 28 July 2024 (subject to final approvals). Secure your entry today and race past some of London’s iconic landmarks.