HomeGet Involved What Is Triathlon? Heard about triathlon but still not really sure what it's all about? Here you can find out all you need to know! Become an Age-Grouper The GB Age-Group competition offers all Home Nation members a unique opportunity to compete up to an International Level. Membership As a member you can access a great range of exclusive related benefits designed with your swim, bike, run experience in mind. NEWS From Addiction to Leader 29th April 2024 Onwards and upwards for British Champion Katie Latham 25th April 2024 Age-Group Competition and Comradeship 18th April 2024 Aberdeenshire, Edinburgh, Cornwall, Venice, Age-Group Gold 5th April 2024 April and May Events Update 4th April 2024 Three-year journey to Age-Group World Champion 21st March 2024 My change in approach to racing 19th March 2024