Click an event for full event details, location, route, sustainability, what's included and how to enter.
Taking place across the scenic Thames Valley area. Swim the river, cycle the hilly open roads, and run the flat Thames path as part of an exciting multi-activity event for summer.
This Half Ironman event is a great test of endurance and ideal for athletes looking to step up from the Olympic distance, testing athletes' endurance, speed, transition skills, and much training.
Race through the beautiful grounds of stunning Belvoir Castle out into surrounding Leicestershire in a 'half ironman' distance triathlon then celebrate with friends and family in the festival village.