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 274 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.
August 2026
A five-race sprint triathlon series at Cromhall Quarry with a 750 m open-water swim, 18 km bike on local roads and a 5 km run finishing in the quarry. Points per race decide overall series standings.
Sprint triathlon at Cromhall Quarry with a 750 m lake swim, 18 km bike and 5 km run, chip timing, free parking and prizes for top finishers.
A Lake District triathlon at Bassenthwaite Sailing Club offering short and standard courses with open water swims, road cycling and runs. Club facilities include parking, food and showers and relay entries are available.
Inclusive triathlon at Dorney Lake on 15 August 2026 offering three distances, adaptive equipment options, team relays and a celebrity relay with no cut off times.
Bedford Triathlon at The Embankment offers Olympic and Sprint categories with a TT-style bike route including Hill Foot and a shortened two-lap riverside run.
Triathlon at Oundle School with swims in a 50m indoor pool, bike on nearby country roads and a run around school playing fields. Supersprint and sprint options, chip timing, family races and event photos available.
Aquathlon at Blithfield Sailing Club on 16 August 2026 with distances 750M(O) and 5K, organised by PMA Racing.
Standard triathlon at Selkirk Leisure Centre with a 1500m pool swim, 40 km bike through Bowhill estate and a 10 km riverside run.
A Triathlon Scotland sanctioned event on 16 Aug 2026 at Ugadale Hotel, Campbeltown featuring junior aquathon options and an adult triathlon with relay teams, mandatory cycle helmets and category prizes.
Full distance triathlon in Leeds with a lake swim, a hilly bike course through Yorkshire and a run around Roundhay Park; England's only IRONMAN.
Open water standard triathlon and aquabike at Blithfield Reservoir with two-lap swim, bike and run courses and on-site facilities.
A pool start triathlon at York Sport Village with flat closed-road bike and run laps, multiple distances including Sprint, Super Sprint, Fun, relay and a CRUK Wave.
A family adventure race at Alice Holt Forest on 16 August 2026 offering The Pack and Wolf Cub Challenges with combined cycling and on foot sections.
Two triathlon races at Queenford Water Park in Oxfordshire, including a June sprint and an August Olympic distance with chip timing and race photos.
A 70.3 middle distance triathlon in Aberfeldy, Highland Perthshire, featuring an open water swim, bike and run as part of the Aberfeldy Multi Sport Festival on 16 August 2026.
Sprint triathlon and duathlon at Worksop College featuring a pool swim, rolling 22.6 km bike route and off road runs through college grounds and woodland.
A five race aquathlon series at Sale Water Park on 18 Aug 2026 organised by Manchester Triathlon Club. Adult races use an 800 m swim and 5 km run while youths complete half the distances.
Evening multisport series at Lake 62, Ashton Keynes, featuring swim, cycle and run options, a four-race discount and interest-free payment plans.
An XTRI gravel triathlon in the Arrochar Alps, Scotland on August 22, 2026, featuring a loch swim, a 50 km gravel ride and a mountain run to Ben Donich.
Long and short multisport races at Druridge Bay Country Park with open water swims, mostly flat coastal bike routes and lake-side running courses.