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 227 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 coastal standard distance triathlon at Broad Haven with Aquabike and relay options, open water swimming, rural bike climbs and a coastal run.
Three lap-based triathlon distances at The Mere, Ellesmere with freshwater swims, countryside bike laps, a flat tarmac run, relay teams and onsite camping.
Two days of triathlon, duathlon, aquabike, aquathlon, open water swims and running races at Cholmondeley Castle in Cheshire on 26 and 27 June 2027.
A weekend of triathlon, aquabike and UTMB index trail runs at Kielder Forest Park offering full and half distance triathlon options, team relays and 28K and 50K trail races.
Pool based triathlon at Caldicot Leisure Centre on 26 June 2027 with an indoor swim, traffic free grass cycle circuit, multiple distances, relay and kids races.
Monthly updates for United Kingdom
Get new running races (and updates) in your inbox every month.
A six-lap Eliminator Swimrun in Aberdyfi mixing running and open water swims around the Dyfi Biosphere, scheduled for 26 June 2027.
Coastal triathlon and duathlon in Llandudno with sea swims by the pier, closed-road cycling on Marine Drive, and sprint and standard distances.
Triathlon festival in Swanage with open water swims, hilly bike routes and ridge runs across the Purbeck Downs.
A lap-format swimrun at Tal Y Llyn in Snowdonia featuring 5.2 km laps with running and swims across a glacial ribbon lake amid Cadair Idris.
A multi-sport weekend at Park Foot Holiday Park, Ullswater, offering sprint, standard and middle triathlon, duathlon, aquabike and aquathlon formats.
A five-event evening multi-sport series in Portsmouth combining running, cycling and kayak or SUP legs along Langstone Harbour from 28 June to 26 August 2027.
July 2027
A multisport weekend at Holkham Hall with a middle distance triathlon, aquabike, gravel sprint, 10k and youth races plus on site camping.
Five-distance triathlon at Hitchin Outdoor Pool and Butts Close, from children's Nano races to the Olympic distance, with timing, t-shirt and finisher medal included.
Multisport races at Derwent Reservoir on 4 July 2027 offering sprint and standard triathlon, duathlon and Aquabike distances in calm open water and scenic countryside.
Triathlon and duathlon at Fish Meadow with River Severn open-water swims, rural bike routes, riverside runs and on site camping.
Two days of triathlon, duathlon, aquathlon and aquabike racing at Cockshott Point, Windermere on 10–11 July 2027 with Live Chip Timing and British Triathlon permitted entries.
Two-day triathlon festival at Ripon Racecourse with junior open-water races, adult sprint and Olympic events, on-site camping, glamping and training support.
A two-day SUP, mountain bike and trail run weekend at Roadford Lake, Devon, on 10 to 11 July 2027 with SUP lessons, bike routes, chip timing and on-site camping.
A coastal triathlon in Southend-on-Sea on 11 July 2027 offering sprint, standard, aquabike, team relay and duathlon options with chip timing and water safety cover.
A multi-discipline event in Winchester featuring a 20 km bike, 2 km kayak and 5 km run along the Itchen Canal, open to individuals or relay teams.