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 235 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.
September 2026
Pool swim, fast bike loops and a lapped park run at Woking Leisure Centre offering junior and adult triathlon and aquathlon races.
Pool-based sprint triathlon in Daventry with a 400 m swim, 20 km bike and 5 km run; individual and relay entries plus a club invitational competition.
A seaside sprint triathlon at North Sands combining a 700m open water swim, a 19km rolling bike route and a 3km trail run, with proceeds supporting the Salcombe RNLI.
Team relay triathlon at Southwater Country Park on 13 September 2026, with teams of three completing a 400 m swim, 18 km cycle and 3.8 km run. Wetsuits are compulsory and a British Triathlon race licence or race pass is required for competitors.
A coastal swimrun around Fowey and Gribbin Head on 13 September 2026 with long and short course options combining running and sea swims over multiple stages. The long course can be entered as a pair.
Tri Reigate at Buckland Park offers sprint and standard triathlon distances with lake swims, country lane cycling and lakeside running. The event supports Macmillan Cancer Support and includes chip timing, free photos and a themed medal.
A closed-road triathlon at Willen Lake offering Sprint and Standard distances, plus aquabike and relay options. The event features calm open water, a traffic-free bike course and a flat lakeside run.
Short Swim Bike Run MINI duathlon at Tockington Manor School with two short course options, grassy field runs and a 5 km bike loop on quiet lanes, limited to a small field and marshalled with first aid support.
The Vitruvian Triathlon is a middle distance race at Rutland Water each September featuring a 1.9 km swim, 89 km bike and 21 km run. Aquabike and relay entries are available and the event finishes at the Whitwell event hub.
A 13 km open-water swim followed by a 13 km trail run along the Wales Coast Path back to Aberdyfi. Live GPS tracking is provided and swimmers must meet a minimum open-water pace requirement.
The 32nd Langport Triathlon on Sunday 13 September is a sprint triathlon with a 400 m pool swim, a 22.5 km bike route and a 5 km run. It offers individual and relay entries, chip timing and event photos.
A community duathlon at Hartfield House in the Scottish Highlands on 19 September 2026, pairing a 14.3 km run and a 24.1 km bike leg over hilly coastal terrain, with Race and Challenge entry options and local accommodation available.
NightTriathlon at Rutland Water combines a 500m night swim, a 15km closed-road bike and a 5km illuminated run around Whitwell, with swim practice and race services included.
Trail duathlon in Dalbeattie Forest on 19 September 2026 with a main 9 mile run plus 18 mile bike or a short 4 mile run plus 9 mile bike.
A multi-discipline triathlon day in Wilmslow featuring sprint and double sprint triathlons, aquabike, aquathlon, relay and duathlon with entry options and listed fees.
ATW St Neots Triathlon on 20 September 2026 at Riverside Park combines a River Ouse swim, scenic bike and riverside run across distances from Super Sprint up to a new Middle Distance with relay options and wetsuit hire available.
The Falmouth Triathlon offers a scenic coastal challenge at Gyllyngvase Beach. Choose between the Super Sprint 'Little Seal' or the Sprint 'Big Seal' distance, both starting with a swim in calm, turquoise waters. It's part of the Cornish Tri Series,..
A sea swim at Dawlish Warren followed by two or three bike laps on a flat sheltered circuit and a coastal run; categories include supersprint, sprint, aquabike and team relay.
Off-road duathlons in Cannock Chase Forest offering Sprint and Standard formats on forest and gravel trails, with live chip-timing and eligibility for British Triathlon age group qualifiers. Finishers receive a medal, merchandise, and a refreshment.