Age Group Changes

Age groups in the UK are changing in 2026. This section offers further information on how these changes will be implemented to ensure the transition is as smooth as possible for all athletes affected.

From 1^st April, the sport across the UK will move to under-even age groups. To prepare for this, the 2025-26 indoor track and field season will change early in Scotland to allow athletes competing indoors next year to prepare for the upcoming outdoor season in their new under-even age groups. Changes will be introduced in other disciplines, such as cross country, road running, hill and trail running from April 2026.