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 triathlon experience in mind. NEWS Up and coming Scottish triathlete raises over £1,600 for Namibian School 18th February 2021 Isle swim, bike, run for charity 27th January 2021 My Age-Group story of adjusting to change 22nd January 2021 Sixteen golds and counting for Peggy Crome 20th January 2021 Leadership changes at the Triathlon Trust 22nd December 2020 Triathlon hero named BBC London Unsung Hero of the Year 17th December 2020 Setting Winter Training Goals with Paratriathlon Head Coach Jonathon Riall 11th December 2020