City of London
Triathlon Calendar near City of London 2026-2027
Monthly updates for City of London
Get new running races (and updates) in your inbox every month.
Explore the top triathlons near City of London for 2026-2027! We've gathered 24 exciting races in the area. Check out our detailed list below to find your next local race.
June 2027
Club organised triathlon in Swanley on 13 June 2027 offering sprint, standard and aqua bike distances, BTF sanctioned and in its 35th year.
Multi-distance triathlon in Windsor with an open-water Thames swim, cycling past Windsor Castle and a finishing run through Windsor Great Park.
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.
September 2027
Multisport racing at Dorney Lake on 5 September 2027 with triathlon, duathlon, aquabike, aquathlon, open water swims and 5K, 10K and 15K runs.
Monthly updates for City of London
Get new running races (and updates) in your inbox every month.