Triathlon Calendar United Kingdom 2026-2027
Monthly updates for United Kingdom
Get new running races (and updates) in your inbox every month.
Explore the best triathlons in United Kingdom for 2026-2027! Our updated list features 227 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
Super Sprint and Sprint duathlons at The Bramley Farm, Altrincham on 27 September 2026; Sprint course: 5.83 km run, 21.99 km bike and 2.67 km run.
A one-day, in-person hybrid event combining two hours of powerlifting with two hours of lap running at Pentillie Castle and Plymouth Performance Gym.
October 2026
Race at a historic Olympic venue with this flat and fast road duathlon. Choose from Super Sprint Standard or Relay distances and enjoy a chip timed course through the scenic grounds of Dorney Lake.
Duathlon and triathlon races at Dorney Lake with Super Sprint, Sprint and Standard distances on a flat, draft-illegal course; British Triathlon membership or a Race Pass is required.
Triathlon at Dorney Lake on 3 October 2026 with Super Sprint, Sprint and Standard distances, plus aquabike and relays; calm open water, flat road course, chip-timed results, marshals and an event village with race photos.
Monthly updates for United Kingdom
Get new running races (and updates) in your inbox every month.
Two days of fully off road races at Bramham Park on 3 and 4 October 2026, featuring trail runs, a 70 km gravel sportive and junior and adult duathlons.
DSFRS Multisport Championships at Torbay Velopark features an individual Sprint Triathlon for Fire Service members and a Sprint Relay for teams of two or three, organised by Sportiva Events with a relay entry price of 51 GBP.
Adults can choose pool swims up to 5 km or an aquathlon with a 1 km or 2 km swim followed by a 10 km run to Devils Chimney and back.
Duathlon at Oulton Park Circuit with sprint, standard and middle distances, mixed drafting rules, and a race licence requirement.
Off road triathlon festival at Lochore Meadows, Fife on October 4 2026 with varied race formats including a new gravel triathlon and a Triathlon Scotland sanctioned full distance.
Duathlon at Thruxton Race Circuit with sprint and standard distances, draft legal sprint, and GB 2027 age group qualification available.
Selsey Triathlon at Seal Bay Resort on 4 October 2026 features Super Sprint and Sprint races from a private beach with nearly flat bike routes and a closed-road run. Wetsuits are mandatory and all finishers receive a medal.
A traffic-free triathlon at Torbay Velopark with pool swims, Velopark bike laps and parkland runs for ages 5 and up, featuring junior, senior and relay categories and a range of entry prices.
A pool based triathlon at Freedom Leisure Lydney offering sprint and Olympic distances, secure transition, scenic bike routes and medals for finishers.
Pool-based triathlon in Stratford-upon-Avon on 4 October 2026 with 400m or 200m swims, an 18km bike lap and flat runs along the River Avon.
Reef Triathlon is a Super Sprint event featuring a 300 m pool swim, a 17 km cycle and a 3 km run held in early October.
A 400m pool swim followed by a 5km flat tarmac run around Tonyrefail Park on 4 October 2026, with marshals, chip timing and accessible facilities.
Round 1 of the Winter Duathlon Series at Betteshanger Country Park on 4 October, with pre-booking required, bank transfer fees and free parking with car registration.
A social sports evening in Boughton Monchelsea combining a 4 km run, one hour of padel across four courts and a DJ with drinks at Forever Padel.
Monthly Swim Bike Run at Torbay Velopark combines pool swims, velopark bike laps and grass runs with distances for children and adults from 25 m swim up to a 9 km bike.