USA Cycling or USAC, based in Colorado Springs, Colorado, is the national governing body for bicycle racing in the United States. It covers the disciplines of road, track, mountain bike, cyclo-cross, and BMX across all ages and ability levels. In 2015, USAC had a membership of 61,631 individual members.

USA Cycling is associated with the UCI (Union Cycliste Internationale), which governs international cycling, and the United States Olympic Committee (USOC). The organization is also a member of the continental body Confederacion Panamericana de Ciclismo (COPACI). USA Cycling also organizes the USA Cycling Pro Road Tour, the top road cycling series for men and women in the United States.

History
The Amateur Bicycle League of America was organized in 1920 and incorporated in New York in 1921. In 1975, the name was changed to the United States Cycling Federation. In 1995, USA Cycling, Inc. was incorporated in Colorado, and in 1995, the two corporations merged, with USA Cycling the umbrella corporation.[3] National Off Road Bicycle Association, once an independent governing body of mountain bike racing in the US is now the mountain bike racing division of USA Cycling (USAC).
The office of USA Cycling, Inc. remained on the United States Olympic Training Center campus near downtown Colorado Springs until March 2009. Thanks to the generous support of Nor’wood Development group and the El Pomar Foundation, combined with the collective efforts of the City of Colorado Springs and several local organizations, including the Colorado Springs Economic Development Corporation, and the Colorado Springs Sports Corporation, the national governing body secured office space on the city's north side. USA Cycling's new headquarters now consists of a 26,000-square-foot building on nearly two acres of land near I-25 on the northwest side of Colorado Springs.

Organization
USA Cycling is the official governing body for all disciplines of competitive cycling in the United States, including road, track, mountain bike, BMX, and cyclo-cross. The organization has a two-part mission: To achieve sustained success in international cycling competition and to grow competitive cycling in America.

The mountain bike racing division of USA Cycling was formerly NORBA, the National Off Road Bicycle Association.

USA Cycling maintains development programs for men and women in all disciplines of competitive cycling, providing a structured pathway to the top tier of the sport. In 2010, 266 individual riders took part in USA Cycling's National Development Program, gaining valuable race experience through 1900 fully supported race days.

Regional and national development camps
Serving as entry points into USA Cycling's National Development Program pathway, the Regional and National Development Camps aim to identify talent and, in some cases, name riders to USA Cycling rosters for major international competitions.

https://usacycling.org