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 5 exciting races across the region. Find your next race in London below and join the running community at these great events!
September 2026
Aquathlon at London Fields Lido combining a 400 m pool swim with a 5 km loop around London Fields Common, listed in the Senior London League.
Sprint and Super Sprint triathlons at Hampton Pool feature pool swims in a 26°C lido, road cycling and runs beside Hampton Court with safety measures for open roads.
October 2026
Aquathlon at the London Aquatics Centre: a 400 m pool swim followed by a measured 5 km run in Queen Elizabeth Olympic Park, open to ages 15 and over.
March 2027
A family focused run bike run at Hillingdon Cycle Circuit on 14 March 2027 with multiple distances on a traffic free tarmac circuit.
August 2027
A two day triathlon festival in London on 21 and 22 August 2027 featuring a 100 km T100 race plus Olympic, Sprint and Super Sprint formats and relay options.
Monthly updates for London
Get new running races (and updates) in your inbox every month.