London T100 Triathlon

Get ready for an unforgettable weekend of athletic excitement at the London T100 Triathlon, taking place from Saturday, August 9th to Sunday, August 10th, 2025.

Organised by the London T100 Triathlon team, this thrilling event promises to build on the success of its debut in 2024, which sold out quickly due to overwhelming demand. Athletes and spectators alike will enjoy a unique closed-roads racing experience, navigating through the stunning backdrop of London's iconic city centre.

Participants will have the chance to challenge themselves across various race distances, making it a perfect event for triathlon enthusiasts of all levels. Whether you are a seasoned pro or a newcomer to the triathlon scene, the London T100 Triathlon is set to deliver an exhilarating atmosphere filled with camaraderie, competition, and unforgettable memories. Don’t miss your chance to be part of this remarkable festival of multisport action!

Find out more here!

Opening dates and times
Saturday 9th August
Sprint and Super-sprint registration: 7.00am
Sprint triathlon waves: 9.00am
Super sprint triathlon waves: 10.20am
100km registration: 10.00am
Pro women race: 12.00pm
Olympic registration: 2.00pm
Pro men race: 2.45pm

Sunday 10th August
100km triathlon waves: 6.30am
Olympic triathlon waves: 8.30am

Getting here
Custom House (Elizabeth line and DLR)
West Entrance

Driving to Excel
Please note the road running across the campus, Sandstone Lane and Seagull Lane, is closed. Access to the car park under the venue and the lorryway for deliveries is only via Royal Victoria Dock Road or the A112. Click here for more information.