London
Triathlon Calendar London 2026-2027
Monthly updates for London
Get new running races (and updates) in your inbox every month.
Explore the best triathlons in London for 2026-2027! Our updated list features 7 exciting races across the region. Find your next race in London below and join the running community at these great events!
October 2026
Aquathlon at the London Aquatics Centre combining a 400 m pool swim with a 5 km run around Queen Elizabeth Olympic Park, with aid stations and chip timing.
A 432 m pool swim followed by a 5 km run at Hampton Pool and Bushy Park on 25 October 2026, age 16+, entry £45 includes chip timing and a finisher medal.
November 2026
A routed run from Hampstead High Street to Brockwell Park of about half a marathon through London parks and ponds with swims included and a relaxed club atmosphere.
February 2027
A roughly half a marathon run through London parks and lidos from Hampstead to Brockwell Park with organised swims and a kit van, organised by Above Below.
March 2027
Family duathlon at Hillingdon Cycle Circuit on 14 March 2027 with multiple run, bike, run distances on a traffic free, purpose built circuit.
Monthly updates for London
Get new running races (and updates) in your inbox every month.
August 2027
Multi-distance triathlon festival in London on 21-22 August 2027, featuring the 100 km T100 distance plus Olympic, Sprint and Super Sprint options.
Beginner-friendly triathlon at Surrey Docks with open water swims, static cycling options and flat run routes, focused on community and representation rather than competition.