Team USA is the group of age-group athletes that qualify for the right to represent the United States and compete in the World Triathlon World Championships, which attracts the best athletes representing over 50 countries each year. While exact disciplines and races vary from year to year, athletes can generally compete in World Championships for the following:
- Triathlon (Sprint, Olympic-Distance, Long Course, Super Sprint Time Trial)
- Duathlon (Sprint, Standard, Long Distance)
- Aquathlon (Standard)
- Aquabike (Standard, Long Course)
- Cross (Triathlon and Duathlon; distances vary by location)
- Winter (Run, bike ski; distances vary by location)
Athletes are separated into five-year age groups (18-19, 20-24, etc., up to 90+).