Which athletes are in the U16 and U18 age groups?

Athletics Canada recognizes age groups by the athlete's age on December 31 of the year of competition:

• U16: women and men aged 14 and 15.
• U18: women and men aged 16 and 17.
• U20: women and men aged 18 and 19.

For the national championships, the U16 championships are open to Athletics Canada associates aged 15 and younger in the year of competition and the U18 championships to those aged 17 and younger (athletes under 14 may not enter the U16 championships).

Source: Athletics Canada Events and Technical Specifications for Athletics Manual and Technical Rules, December 2025.