London T100 Triathlon

London T100 Triathlon

Saturday, 25 July 2026 to Sunday, 26 July 2026

Royal Victoria Dock, London, UK

Follow event Triathlon Road/Path/Park Relay

The London T100 from 25 to 26 July 2026 is the world’s biggest city centre triathlon and your chance to race past some of London’s iconic landmarks.

The T100 event features a 2km swim, 80km and 18km run based at the Royal Victoria Dock in East London. The swim will take place in the sheltered Royal Victoria Dock, the bike leg is on closed-roads, the run will take place within Docklands, perfect for spectator support.

Other distances include Olympic and Sprint which can also be entered as a relay team (2-3 members).

Organiser

London Marathon Events

Distances/Events

Triathlon (Swim + Bike + Run):
Sprint: 750m + 20K + 5K - solo/relay
Olympic: 1.5K + 40K + 10K - solo/relay
T100 - 2K + 80K + 18K

Location map

Refer to the event website for start lines, transition area and course maps.

Please note: the map location may be approximate. Refer to the event website for start lines and course maps.

Disclaimer

Running Calendar is an event listing site created as a resource for runners/walkers/athletes. We have no affiliation with the events listed, nor do we endorse or recommend them.

Listings are based on information found on the official event website, facebook page and/or from event directors.

We endeavour to keep these as up-to-date as possible, however we accept no responsibility or liability for any errors/omissions in the content of this site or that of any third party links provided in our listings. Information can be subject to change without notice.

Always check with the official event website and/or facebook page for the most recent information. 

This listing was last manually checked on 26 August 2025.

Nearby Events

More nearby events