Triathlon Events in United Kingdom 🇬🇧 2026–2027 — Calendar

15 Upcoming triathlon events listed in United Kingdom from August 2026 to February 2028 with the most events in England (11), Wales (3) and Scotland (1), including IRONMAN 70.3 Weymouth and 2027 IRONMAN 70.3 Bolton.

20 Athletes targeting these events on Intervals.icu

Dorney Lake Standard Triathlon

Dorney Lake, Windsor, UK Swim Ride Run

north berwick triathlon

North Berwick, UK Swim Ride Run

NEW FOREST TRIATHLON

Moyles Court, Rockford, Ringwood BH24 3NF, UK Swim Ride Run

Triathlon Y Bala

1.9 km swim 85 km bike 21.1 km run 239.99 until 23/08/2026 259.99 until 04/09/2026

Bala LL23, UK Swim Ride Run

Reading Triathlon (Standard Distance)

Kirtons Farm Rd, Reading RG30 3UN, UK Open Water Swim Ride Run

VITRUVIAN TRIATHLON

Rutland Water, Oakham, UK Open Water Swim Ride Run

IRONMAN 70.3 Weymouth

Ironman 70.3 Weymouth

Weymouth, UK Ride Run Swim

Waveney Sprint Triathlon

Bedingfield Rd, Bungay NR35 1FB, UK Ride Run Swim

70.3

Hever Rd, Hever, Edenbridge TN8 7NG, UK Ride Run Swim Open Water Swim

Dorney Lake Standard Triathlon

Dorney Lake, Windsor, UK Swim Ride Run

Mumbles Olympic Triathlon

Mumbles, UK Open Water Swim Ride Run

Dorney Lake Standard Triathlon

Dorney Lake, Windsor, UK Swim Ride Run

Warwickshire Triathlon

Stratford-upon-Avon CV37, UK Swim Ride Run

2027 IRONMAN 70.3 Bolton

Bolton, UK Open Water Swim Ride Run

Ironman 70.3 Swansea

Ironman 70.3 Swansea

Swansea, UK Open Water Swim Ride Run