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 236 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 Triathlon Scotland sanctioned event on 16 Aug 2026 at Ugadale Hotel, Campbeltown featuring junior aquathon options and an adult triathlon with relay teams, mandatory cycle helmets and category prizes.
Full distance IRONMAN in Leeds with a lake swim, a hilly Yorkshire bike course and a run around Roundhay Park; England's only IRONMAN and a World Championship qualifier.
A multi-discipline event at Blithfield Reservoir featuring a 1.5 km two lap swim, a two lap rolling bike course with 355 m elevation and a two lap mixed trail and road run. Entry options include aquabike, individual triathlon and relay.
A five race aquathlon series at Sale Water Park on 18 Aug 2026 organised by Manchester Triathlon Club. Adult races use an 800 m swim and 5 km run while youths complete half the distances.
Evening multisport races at Lake 62 in the Cotswolds offering triathlon, duathlon, aquabike and aquathlon with lake swims, road cycling and venue running, plus a series discount and interest-free payment options.
A Gravel XTRI in the Arrochar Alps combining a 1.8 km loch swim, a 50 km gravel ride with nearly 2000 m ascent, and a 25 km mountain run to Ben Donich, following ancient drovers' roads and local highland terrain.
A looped Eliminator swimrun at Tal Y Llyn in Snowdonia, featuring 5.2 km laps with 4.6 km running and 600 m swimming, up to six laps and a HQ at the Tyn Y Cornel Hotel. Terrain is mainly hard surface with short trail swim exits.
Long distance triathlon and multi discipline races at Druridge Bay Country Park, featuring full and half triathlon distances, aquabike, duathlon, relays and open water swims.
The Bodmin Triathlon offers Super Sprint and Sprint distances starting from the Bodmin Leisure Centre. The bike and run courses take athletes through rolling roads and the forested grounds of Lanhydrock Estate. It's part of a charity-run series where..
A multi-discipline event at Edge Hill University on 23 August 2026 featuring a 400 m pool swim, a flat 21.5 km cycle and a 5 km run, plus duathlon, aquathlon and a new aquabike option. British Triathlon membership or a race pass is required.
Aquathlon at Gourock Outdoor Pool on 23 August 2026 featuring team, adult and junior swim-run races. Event includes a half mile swim with a 5 km run and a junior 3 km option.
A draft legal, chip timed sprint duathlon at Darley Moor Race Circuit on 23 August 2026 with three waves, age-group prizes and an option to qualify for the 2027 European Age Group Sprint Distance Duathlon Championships.
A sprint-distance triathlon at Thorpe Park on 23 August 2026 with a 750m lake swim, 20 km bike and 5 km three-lap run. Organised by RunThrough, the event supports Macmillan and includes Thorpe Park entry.
Triathlon at Bishopton Lake featuring shallow, sheltered swims, flat village cycle laps and a lapped gravel run, with sprint to Olympic distance and multisport options.
A two-distance duathlon near Manchester Airport with a run through runway tunnels and bike laps on quiet country lanes.
A run bike run event on 23 Aug 2026 around Bideford using the Tarka Trail and local roads, with individual, e bike and relay formats. Transition is at Bideford Quay and event profits go to charities.
Evening triathlon at Dorney Lake on 26 August 2026 offering Sprint, Super Sprint, Aquabike and relay formats. The clear lake, flat bike and run course and chip timed results are central features.
Final race of the 2026 Bay Aquathlon Series at Swansea Bay. Open water event offering three distances from a 400m swim with 3k run up to a 750m swim with 5k run, plus relay entries and a full series option.
St Mary's Swimrun on 27 August 2026 offers two circumnavigation courses of St Mary's, 8 km and 16 km, with solo and pair entry and on-water safety support.
A team relay triathlon for four-person teams at the National Watersports Centre on 29 August 2026, featuring 500 m swim, 15 km bike and 5 km run legs and championships for club members and non members.