South East (England)
Triathlon Calendar South East (England) 2026-2027
Monthly updates for South East (England)
Get new running races (and updates) in your inbox every month.
Explore the best triathlons in South East (England) for 2026-2027! Our updated list features 43 exciting races across the region. Find your next race in South East (England) below and join the running community at these great events!
September 2026
A two-day multisport weekend at Hever Castle with triathlon, duathlon, aquabike, aquathlon, swims and runs for juniors and adults.
October 2026
Race at a historic Olympic venue with this flat and fast road duathlon. Choose from Super Sprint Standard or Relay distances and enjoy a chip timed course through the scenic grounds of Dorney Lake.
Multi-distance duathlon and triathlon at Dorney Lake with flat, chip-timed bike and run courses, marked routes, spectator viewing and British Triathlon membership required.
Triathlon at Dorney Lake on 3 October 2026 with Super Sprint, Sprint and Standard distances, plus aquabike and relays; calm open water, flat road course, chip-timed results, marshals and an event village with race photos.
Duathlon at Thruxton Race Circuit with sprint and standard distances on a wide smooth tarmac circuit, hosting GB 2027 age group qualifiers.
Monthly updates for South East (England)
Get new running races (and updates) in your inbox every month.
Selsey Triathlon at Seal Bay Resort on 4 October 2026 features Super Sprint and Sprint races from a private beach with nearly flat bike routes and a closed-road run. Wetsuits are mandatory and all finishers receive a medal.
November 2026
A chip timed duathlon at Dorney Lake with Super Sprint, Sprint and Standard distances on flat road courses. Relay entries for two or three athletes and entry includes a themed medal and free race photos.
Race Super Sprint, Sprint or Standard duathlon at Dorney Lake on a flat, chip timed course with marked laps, helpers and spectator viewing.
December 2026
A chip-timed duathlon at Dorney Lake with Super Sprint, Sprint and Standard formats, relay options, and a flat road course around an Olympic venue. The event includes a themed medal, free photos and an event village with food and partner goodies.
Super Sprint, Sprint or Standard distances at flat, scenic Dorney Lake with marked courses, helper stations, spectator viewing and a British Triathlon race licence requirement.
April 2027
Pool-based sprint triathlon at Applemore Leisure Centre: 400 m swim, 21 km bike through the New Forest and a 5 km run to Dibden Purlieu.
A duathlon at Chieveley Village Hall on 18 April combining a 5 km run, 25 km bike and 5 km run across off road paths and rural roads.
May 2027
Pool based triathlon at Tonbridge School Centre on 3 May 2027 offering sprint, standard, aquabike, aquathlon and relay formats.
A community organised event at Sevenoaks Leisure Centre with pool swims, a 25 km bike route through Kent countryside, and runs through Knole park.
Marlow Triathlon on 30 May 2027 at Higginson Park features open water River Thames swims, cycling through the Chilterns and riverside runs, with medals and chip timing.
June 2027
A two-day triathlon at Blenheim Palace on June 5-6 2027 with a lake swim, closed-road bike and scenic run through the palace parkland.
Pool swim, rural cycle and grass run around Gillotts School at Henley Leisure Centre on 6 June 2027.
Sprint triathlon and junior aquathlon at Dover Leisure Centre on 6 June 2027, with a 400 m pool swim, 14 km bike and 5 km run plus age-group junior races.
Club organised BTF sanctioned triathlon at White Oaks Leisure Centre in Swanley on 13 June 2027 offering sprint, standard and aqua bike distances with finisher mementos.
River Thames swim, country roads cycle and a finish past Windsor Castle with sprint and Olympic distances and relay options.