London T100 Triathlon

London T100 Triathlon

Saturday, 21 August 2027 to Sunday, 22 August 2027

Royal Victoria Dock, London, UK

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The London T100 from 21 to 22 August 2027 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, Sprint and Super Sprint triathlons that can be entered solo or as a relay team (2-3 members).

Organiser

London Marathon Events

Distances/Events

Triathlon (Swim + Bike + Run): Schedule TBC

Saturday:
Super Sprint: 400m + 10K + 2.5K - solo/relay
Sprint: 750m + 20K + 5K - solo/relay

Sunday:
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.

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This listing was last manually checked on 12 August 2026.

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