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 247 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 2027
Triathlon at Box End Lakes on 19 September 2027 offering Sprint, Standard, Odyssey middle distance, aquabike and relay options.
A pool based autumn triathlon at Wilmslow Leisure Centre offering sprint and double sprint formats plus aquabike, aquathlon and relay options.
A multisport IRONMAN event in Tenby with a sunrise swim on North Beach, a hilly bike along the Pembrokeshire coast, and a town centre run with large spectator support.
Multi-discipline triathlon, aquabike and aquathlon races at Woodhorn Museum and QE2 Country Park on 19 September 2027, offered over sprint and standard distances.
Monthly updates for United Kingdom
Get new running races (and updates) in your inbox every month.
October 2027
Multi-format race day at Oulton Park with duathlon and triathlon options plus an afternoon Fast 5km; venue and date are subject to confirmation.
January 2028
Triathlon at Fleetwood Leisure Centre on closed roads along the Esplanade with pool swims, multi lap bike circuits, chip timing and prizes.