UK Triathlon Events Found
View all ↓Triathlons
Triathlons combine swimming, cycling and running into one of the most popular all-round physical challenges. There are a huge variety of types of triathlons to choose from in terms of distances, cycle and run terrain options, and whether the swim is in a pool, in open water (eg lake) or even the sea.
Triathlon distances:
Super Sprint Triathlons: 400m swim; 10km bike; 2.5km run.
Sprint Triathlons: 750m swim; 20km bike; 5km run.
Olympic Triathlons (aka Standard Triathlons): 1500m swim; 40km bike; 10km run.
Half Ironman Triathlons: 1.9km swim; 90km bike; 21.1km run. (This distance is also known as a “70.3” which refers to the total race distance in miles.)
Ironman™ Triathlons: 3.86km (2.4 mile) swim; 180.25km (112 mile) bike; 42.2km (26.2 mile) run. As Ironman™ is a trademark, these are also known as ‘Iron distance’ events.
Find a Race lists more than 450 triathlons every year. So whether you’re new to the sport and looking for your first Super Sprint triathlon or a hardened triathlete looking for a Double Ironman distance event, check out our comprehensive full 2025 - 2026 triathlon list below, or if you know which distance you want to search for use the links above.
Triathlons
Snowman Duathlon & Triathlon
Betws-y-Coed, Conwy Principal AreaTriathlon Y Bala
Bala, GwyneddDorney Lake Triathlon
Windsor, BerkshireSuperfeet Sandman - Triathlon & Duathlon
Llanfairpwllgwyngyll, GwyneddSwim Bike Run
Herne Bay, KentThorpe Park Sprint Triathlon
Chertsey, SurreyEnglish Riviera Triathlon
The Kings Drive, Torquay, Devon, TQ2 5JEDorney Evening Triathlon
Windsor, BuckinghamshireATW Odyssey Triathlon
Riverside Park, Regatta Meadow, St Neots, Cambridgeshire, PE19 7ABThe FixAddiction Triathlon
Windsor, BuckinghamshireATW St Neots Triathlon - Race 2
Riverside Park, Regatta Meadow, St Neots, Cambridgeshire, PE19 7ABATW Bristol Triathlon
Brunel Lock Rd, Cumberland Basin, Bristol,Conquer The Chilterns Triathlon
Henley-on-Thames, OxfordshireUpton Tri + Duathlon
Worcester, WorcestershireDorney Triathlon
Windsor, BerkshireThe One on the River - Marlow
Marlow, BuckinghamshireBelvoir Castle Triathlon & Mulitsport
Grantham, Belvoir, LeicestershireOffer
10% OFF