South East (England)
Triathlon Calendar South East (England) 2026-2027
Monthly updates for South East (England)
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Explore the best triathlons in South East (England) for 2026-2027! Our updated list features 48 exciting races across the region. Find your next race in South East (England) below and join the running community at these great events!
August 2027
A multiformat triathlon event at Emberton Country Park on 1 August 2027 offering middle, standard and sprint distances plus aquabike, aquathlon and relay options.
A summer multisport event in Henley on Thames offering triathlon, duathlon, aquabike, aquathlon and open water swims with chip timing and a finisher medal.
Supertri Brighton on 29 August 2027 features Supersprint, Sprint and Olympic triathlon distances on a fast, flat, traffic free seafront course from Hove Lawns along the Promenade.
September 2027
A long-running sprint triathlon in Newbury with a 300 m swim, 22 km open road cycle and 5 km canal run; 40th edition on 5 September 2027.
Monthly updates for South East (England)
Get new running races (and updates) in your inbox every month.
Multisport racing at Dorney Lake on 5 September 2027 with triathlon, duathlon, aquabike, aquathlon, open water swims and 5K, 10K and 15K runs.
Closed-road triathlon at Willen Lake on 12 September 2027 with Sprint and Standard distances plus aquabike and relay options.