What age groups are there, and how is my age worked out?

The age groups are 16-19, 20-24, 25-29, 30-34, 35-39, 40-44, 45-49, 50-54, 55-59, 60-64, 65-69, 70-74, 75-79, 80-84, 85-89, 90-94 and 95-99 years.

Your age for all categories is your age on 31 December during the season of the triathlon competition. (For Under 23, Junior and Youth draft-legal competition, age is taken on 31 December of the year of the coming World Triathlon Championship competition.)

AusTriathlon keeps national distance recognition for the 14-15 and 16-19 age groups at Sprint distance, the 16-19 age group at Standard distance, and the 18-19 age group at Middle distance.

The "Open" category has prize money below the Professional/Elite threshold and is open to professional and age-group competitors holding any level of AusTriathlon membership.

Source: AusTriathlon Race Competition Rules, June 2026, Appendices C and D and the definition of Open Category.