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 234 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.
June 2027
A multisport event at Cholmondeley Castle in Cheshire offering triathlon, duathlon, aquabike, aquathlon, open water swim and run across 500 acre parkland, plus a festival village, Mixed Team Relay and onsite camping.
Trail runs at Kielder Waterside Park on Saturday 27 June 2026 offering 27.6 km and 48 km courses with UTMB Index status and on course support.
Coastal triathlon and duathlon in Llandudno with sea swims by the pier, closed-road cycling on Marine Drive and sprint and standard distances.
July 2027
A multisport weekend at Holkham Hall in Wells next the Sea, Norfolk on 4 to 5 July 2026 featuring a middle distance triathlon, aquabike, gravel sprint, 10 km run and youth races, plus on-site camping and an event village for spectators.
A five-distance triathlon at Hitchin Outdoor Pool with pool swims, closed roads cycling and a flat run finishing at Butts Close.
Triathlons at Derwent Reservoir on 4 July 2027 offering sprint and standard distances, relay options, chip timing and parking at Derwent Waterside Park.
An afternoon open-water triathlon and duathlon on 10 July 2027 near WR8 0PB offering standard and sprint races, aquabike, aquathlon, relays and kids events with camping available.
A two day multisport weekend at Cockshott Point on Lake Windermere featuring triathlon, duathlon and aquathlon races across novice, sprint and standard distances, with live chip timing and British Triathlon membership or race pass required.
A coastal triathlon in Southend-on-Sea offering sprint, standard, aquabike, relay and duathlon options with chip timing, water safety cover and a marked course. The event includes marshals, a secure transition area and a bespoke medal.
A triathlon-style event in Winchester City with a 20 km bike leg, a 2 km kayak leg and a 5 km run on the Itchen Canal. Entries are available for individuals and relay teams and the event is run as not for profit.
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.
September 2027
A 20 km swimrun on 5 September 2027 that mixes three river swims on the Thames with three trail runs through Wytham woodlands, starting at Eynsham Lock and finishing at Wytham Chalet, with three feed stations and a finish café.
A weekend triathlon at Ullswater combining stand up paddle boarding, road cycling and trail running with standard and long distance options.