[1] It is composed of athletes of all ages, coaches, officials, parents and fans working to strengthen multisport.

USA Triathlon coordinates and sanctions grassroots and elite multisport events across the country and works to create interest and participation in those programs.

USA Triathlon's marquee event each year is its Age Group National Championships, held annually since 1982.

Each year, the USA Triathlon Age Group National Championships draws over 5,000 registered participants.

In 2012, USA Triathlon created its Splash & Dash Youth Aquathlon Series[7] to encourage children ages 7–15 to participate in multisport.