Triathlon Calendar United Kingdom 2026-2027
Monthly updates for United Kingdom
Get new running races (and updates) in your inbox every month.
Explore the best triathlons in United Kingdom for 2026-2027! Our updated list features 308 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
Multisport festival at Druridge Bay Country Park featuring triathlon, aquabike, aquathlon, open water swims and trail runs with British Triathlon qualification.
A middle distance triathlon at Parc Bryn Bach in the Brecon Beacons with a 1.2 mile swim, 60 mile bike and 13.1 mile run.
Experience a one day multi activity adventure in the Lake District featuring a mountain trek, forest mountain biking, and kayaking on Coniston Water.
Monthly updates for United Kingdom
Get new running races (and updates) in your inbox every month.
An extreme triathlon in Torridon, Scotland on 12 June 2027 with a cold 3.4 km Atlantic swim, 200 km Highland bike and 42 km mountain run over two Munros.
A community-focused triathlon at Patcham High School with pool swims, varied bike and run formats, an event village, and multiple accessibility features.
Multi distance triathlon at Dorney Lake with swim, bike and run options plus aquabike and relay entries; British Triathlon membership and a race licence are required.
A lake-to-mountain triathlon in Llanberis with swim in Llyn Padarn, a climb up the Llanberis Pass and trail finishes through the Dinorwig slate quarries.
Triathlon at White Oaks Leisure Centre in Swanley on 13 June 2027 with sprint, standard and aquabike options and set entry fees.
Multi-distance triathlon in Windsor on 13 June 2027 with an open-water Thames swim, road cycling past Windsor Castle, and runs along the Long Walk.
A multi-category triathlon in Norwich organised by Tri-Anglia Triathlon Club, featuring sprint, standard, relay and first-triathlon races with course maps and past results.
Triathlon at Blackpool Sands Beach featuring a sea swim, circular bike course and out and back run; entries limited to 350 with Saturday sea swims and optional beach camping.
Triathlon at 7 Lakes Country Park on 13 June 2027 offering Sprint, Relay and Aquabike options with medals for all finishers.
A sprint triathlon at Beccles Lido with a 420 m pool swim, a 20.3 km bike loop to Bungay and riverside run routes.
Multi-distance triathlon and duathlon at West Craven Sports Centre, Barnoldswick on 13 June 2027, with pool swims, tarmac bike sections and mixed-surface runs.
Abersoch Triathlon in North Wales features Olympic and Sprint courses with a sea swim, bike laps, a mixed beach trail road run and a beach finish.
Triathlon at The Mere, Ellesmere on 19 June 2027 featuring open-water swims, countryside bike routes, closed-road runs and multiple race and relay distances.
A multi-race triathlon in Harwich, Essex featuring Olympic, Sprint and junior distances, chip timing, medals and a sea swim with a duathlon backup if needed.
Lakesman Triathlons in Keswick on 20 June 2027 offer full and half distances with Derwentwater swims, relay and split format entries and staged payment options.