Triathlon Calendar United Kingdom 2026-2027
Monthly updates for United Kingdom
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Explore the best triathlons in United Kingdom for 2026-2027! Our updated list features 271 exciting races across the country. Find your next race in United Kingdom below and join the running community at these great events! Search for a location or view races near London, Birmingham, Glasgow, Liverpool, Scotland or Wales.
July 2027
Compact sprint triathlon in Dorchester with a 300 m pool swim, about 21 km scenic bike including Hardy's Monument, and a two-lap 5 km run.
Teams of three each complete a 750m swim, 23km bike and 5km run in relay format at Box End Park with categories and prizes for top teams.
A sprint triathlon at Carlisle's Sands Centre with a 500 m swim, 20.4 km bike and 4.9 km run, chip timing, relay option and finisher medal.
Swimrun along the Pembrokeshire Coast National Park with full and sprint routes, solo or team options; entries are currently closed.
A weekend of triathlon events at the National Water Sports Centre in Nottingham on 25 to 26 July 2026, featuring the full Outlaw race and the English and British Long Distance Triathlon Championships. The programme also includes sprint, aquabike, jun..
Multi terrain triathlon and duathlon at Plas y Brenin in Eryri, featuring lake swims, mountain road cycling and trail runs across Sprint, Standard and 70.3 distances.
August 2027
A sprint triathlon at Lydney Lido with a 400 m swim, 24 km bike and 5 km run, wetsuit optional and open to all abilities.
Pool-based triathlon at Caldicot Leisure Centre with indoor swim, traffic-free grass cycle and run circuits, multiple distances and relay and youth events.
September 2027
A 20K event on 5 September 2027 combining three Thames swim sections with three cross country runs through Wytham Woods, with three feed stations and post race cafe.
Weekend multisport event at Ullswater combining SUP, road cycling and trail running with two distance options and free SUP lessons on Saturday.
Triathlon at Box End Lakes on 19 September 2027 offering Sprint, Standard and Middle Distance races plus aquabike and relay options in clear open water.