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.
August 2026
A beginner-focused Swim-Bike-Run-Mini triathlon at Tockington Manor with a 200 m pool swim, 10 km bike on mostly flat roads and a 3 km run on sports pitches. Entries are limited and a waiting list is in operation.
A mid week series at Capernwray Dive Centre offering triathlon, aquathlon, aquabike and open swims in a flooded quarry with canal and county lane courses.
A triathlon festival in St Neots on 8 August 2026 featuring full and half distance triathlons plus aquabike options, a festival village with music and food, on site camping, and finisher medals and shirts.
Part of the ATW First To Full Festival on 8 August 2026 in Riverside Park, St Neots, this event offers sprint and standard triathlons, aquabike and relay options with an open-water swim in the River Ouse.
A multisport festival at Riverside Park on 8 August 2026 where entrants choose distances from sprint to full, with triathlon, aquabike, relays and a 12 hour endurance run. The day includes live entertainment, family attractions and on site camping.
Triathlon at Dorney Lake offers sprint, standard and super sprint races on a flat bike and run course with aquabike and relay options. British Triathlon membership and a race licence are required.
Triathlon at Dorney Lake on 8 August 2026 offering Super Sprint, Sprint and Standard distances, plus aquabike and relay options. Entries include a themed medal, chip timed results and free race photos.
Multisport races take place at Hartlepool Marina on 9 August 2026 with swim, cycle and run formats including sprint and standard distances. Relay entries and a separate open water swim are available.
Open water swim and aquathlon at The Bridge in Dartford with multiple swim distances and two aquathlon options; wetsuits are compulsory.
A pool-based aquathlon in Builth Wells on 09 Aug 2026 with 200m swim 3 km run, 400m swim 5 km run, and a 400m swim 5 km relay. The event is chip timed, awards medals and raises funds for The Wales Air Ambulance.
Midweek Aquathlon at DA1 5PR combines a 650 m open water swim with a three lap 5.7 km run, limited to 40 participants for water safety.
A five-race sprint triathlon series at Cromhall Quarry with a 750 m open-water swim, 18 km bike on local roads and a 5 km run finishing in the quarry. Points per race decide overall series standings.
Sprint triathlon at Cromhall Quarry with a 750 m lake swim, 18 km bike and 5 km run, chip timing, free parking and prizes for top finishers.
A Lake District triathlon at Bassenthwaite Sailing Club offering short and standard courses with open water swims, road cycling and runs. Club facilities include parking, food and showers and relay entries are available.
A sprint triathlon at Selkirk Leisure Centre on 15 August 2026 with a 750 m pool swim, 20 km bike and 5 km run. Wave swim starts, a car park transition and a relay option are included.
SPRINT Superhero Tri is a short multisport challenge with a 150 m swim, 3 km bike and 1 km push/run. Entries can be solo, relay, or pulling a Superhero; everyone on course must be registered and receives a medal, T shirt and Super Kit Bag.
A Bedford Harriers triathlon in the town centre with Olympic and Sprint options, a new 2025 Sprint bike route via Hill Foot, and river-side two-lap run.
Triathlon at Oundle School with swims in a 50m indoor pool, bike on nearby country roads and a run around school playing fields. Supersprint and sprint options, chip timing, family races and event photos available.
An aquathlon at Blithfield Sailing Club on 16 August 2026 featuring a 750 m open water swim and a 5 km run. Entries close on 2 August and fees vary by membership status and age.
Standard distance triathlon at Selkirk Leisure Centre on 16 August 2026 with a 1500m pool swim, 40k bike through Bowhill estate and a 10k riverside run; relay entries and race pass requirements apply.