USA Triathlon (USAT) is the national governing body for the multisport disciplines of triathlon, duathlon, aquathlon and winter triathlon in the United States. USA Triathlon is a member federation of the U.S. Olympic Committee and the International Triathlon Union. Its headquarters are in Colorado Springs, Colorado. USA Triathlon sanctions more than 4,300 races every year with nearly 400,000 members. It is composed of athletes of all ages, coaches, officials, parents and fans working to strengthen multisport.