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 231 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 2026
A midweek aquathlon at Trafford Water Sports Centre on 21 July 2026, presented as part of a five-race series. Adult races use a two-lap 800 m swim and two-lap 5 km run with shorter youth distances and published entry fees.
A weekend of triathlon events at the National Water Sports Centre in Nottingham on 25 to 26 July 2026, featuring the full Outlaw race and the English and British Long Distance Triathlon Championships. The programme also includes sprint, aquabike, jun..
A cross triathlon festival at Balloch Country Park featuring three race formats with open water swims in Loch Lomond. The Bikeless Beastie Aquathon is the 2026 Scottish Aquathon Championship and the event includes on-site race facilities and publishe..
The Heb Tri on Scotland's Isle of Lewis features the classic triathlon distances of a 1.5km swim, 40km bike, and 10km run. You can tackle the challenge solo or as a two-person relay team. The event is fully sanctioned and takes place in the scenic We..
London T100 Triathlon takes place 25 to 26 July 2026 at ExCeL London and offers multiple distances from Super Sprint to the 100km triathlon. Water temperature is 18 to 24°C with wetsuits mandatory and several races are sold out.
Triathlon at Dorney Lake on 26 July 2026 with Super Sprint, Sprint and Standard distances, plus Aquabike and relay options. Chip timing, themed medal, free photos, and an event village; the event supports Macmillan Cancer Support.
Sprint triathlon with an indoor pool swim, a road bike route through Worplesdon Pirbright and Normandy, and a 5 km forest trail run at Surrey Sports Park on 26 July 2026. A Kids TriStar Aquathlon for ages 8 to 14 is also included and the event suppor..
Triathlon at Dorney Lake offering Sprint, Standard, Super Sprint, aquabike and relay options on a flat, chip timed course in an Olympic venue.
A multisport event at Gosfield Lake Resort offering Standard and Sprint triathlon plus aquabike, aquathlon, duathlon and a 1500m swim. Chip timing, medals and T shirt are provided; entry is limited to 300 and competitors must be 18 or older.
A multisport event at Plas y Brenin in Eryri combining lake swims, road cycling and mountain trail running. Multiple race options run on the same weekend from a 750 m sprint to a 70.3 Legend plus standalone swims and a duathlon.
Two pool based triathlon races take place at Forfar Community Campus on 26 July 2026, with measured bike courses through Forfar and a run beside Forfar Loch. Entry is limited to 240 participants and entries close on 16 July.
A sprint triathlon at West Mainland Leisure Centre on 26 Jul 2026 with a 750 m pool swim, a 20 km cycle toward Papa Stour Ferry, and a 5 km run made of six laps around the leisure centre grounds.
August 2026
A triathlon at Mallory Park Circuit with a lake swim, multiple laps on a 2.5 km closed bike circuit and 1.25 km run laps. The event includes a draft-legal Sprint and a non-drafting Super Sprint and serves as a 2027 age-group qualifier.
A middle-distance triathlon in Port Talbot with sea swim, bike and flat run, plus a junior aquathlon and the Teleri Mia Mini Mile for children; profits support local charities and the Teleri Mia Foundation.
Experience a unique multi sport event at the historic Blackpool Pit near St Austell. Choose between trail running, open water swimming, or aquathlon distances in a former industrial landscape.
A coastal swimrun on the Pembrokeshire Coast Path in the UK's only coastal national park, offered as full or sprint distances with solo and team entries. ENVOL endorsed with GPX maps and a payment plan option.
The Cowman Triathlon at Emberton Country Park offers Middle, Standard and Sprint triathlon distances plus Aquabike, Aquathlon and Bike-Run formats with open-water swim, road cycling and parkland runs. British Triathlon membership or a race pass is re..
SalTri & Aquabike at MediaCityUK on 2 August 2026 offers sprint and standard triathlon and aquabike races with swims in Dock 9 and bike and run courses through Salford Quays landmarks.
A sprint triathlon on the Ayrshire coast with a 750 m swim, 20 km bike and 5 km run. Individual and three person relay entries are available and national championship medals are awarded to eligible Triathlon Scotland members.