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 6 exciting races across the region. Find your next race in London below and join the running community at these great events!
September 2026
A relaxed community triathlon in South London with open water swim, stationary bike and dockside run where participants choose their own distances.
Willesden Triathlon Club hosts triathlon and aquathlon races at Willesden Sports Centre, featuring a 400 m pool swim and 5 km run, with entries via British Triathlon.
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.
Monthly updates for London
Get new running races (and updates) in your inbox every month.
August 2027
London T100 Triathlon on 21 to 22 August 2027 offers multi-distance triathlon racing in central London, including the 100 km distance and age group qualifying spots for Qatar.