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.
July 2027
A sprint triathlon in Clevedon featuring a 750 m marine lake swim, a 20 km coastal bike loop and a 5 km two-lap run at Salthouse Fields.
Triathlon and multisport races at Woodhorn Museum and QEII Country Park on 18 July 2027, with sprint and standard distances plus aquabike and aquathlon options.
Triathlon at Felixstowe Leisure Centre on 18 July 2027 offering pool and sea swims with sprint, standard, aquabike and super sprint race options.
Women only multisport event in Chester on 18 July 2027 featuring triathlon, quadrathlon, aquabike and a new sprint duathlon on The Meadows.
Triathlon at Dorney Lake offers Sprint, Standard and Super Sprint races plus aquabike and team relay on a flat Olympic venue.
Monthly updates for United Kingdom
Get new running races (and updates) in your inbox every month.
Novice friendly triathlon in Hathersage with a heated outdoor pool swim, a 21 km hilly bike on tarmac and a 6 km off road run through woodland.
Pool swim, local road bike and quiet path run at Holly Hill Leisure Centre on 18 July 2027, with sprint and super sprint distances and a finisher medal.
Two day triathlon weekend in Nottingham with full, middle, sprint and aquabike races, junior runs, an event village and a fireworks finale.
Pool based triathlon at Bellahouston Leisure Centre and Park in Glasgow offering four distances plus a team relay on 24 July 2027.
Swimrun on the Pembrokeshire coast with full and sprint options, solo or team entries, ENVOL endorsed, taking place on 24 July 2027.
Point to point sportive triathlon from Dorney Lake near Windsor to Brighton sea front with a lake swim, long road bike and trail run across the South Downs.
Three off road race options at Balloch Castle Country Park with open water swims, mountain biking and trail runs, all finishing at the castle and including a finisher medal.
Middle distance triathlon at Ellerton Water Park near Richmond, featuring a 2000 m swim, 90 km bike and 21 km run with aquabike and relay options.
Multi distance family triathlon at Dorney Lake with open water swims, closed road bike laps, junior Tristar races and a Family Fun non competitive option.
A middle distance triathlon at Compton Verney featuring a 1.9 km lake swim, a 90 km bike with Edge Hill and a 21.1 km multi terrain run through parkland.
A sprint triathlon at Compton Verney with a 750m lake swim, 23km road bike and 5.25km parkland run in 120 acres of parkland.
Triathlon at Dorney Lake offering Sprint, Standard and Super Sprint races plus aquabike and relay options on a flat lakeside course with British Triathlon membership required.
August 2027
A short T30 triathlon at Lydney Lido on 1 August 2027 with a 400 m swim, 24.5 km bike and 5 km run, offering a finisher's medal.