PBAA - Perimeter Bicycling Association of America
Organizes perimeter events and to encourage cyclists to bicycle perimeters of towns, cities, states, countries, and any geographical boundary. Features events calendar, monthly magazine, and membership information.

Rails to Trails Conservancy (RTC)
Organization that converts abandoned railroad tracks into biking, hiking and walking trails. Site includes bookstore and gift shop, history and information, advocacy campaigns, and members area.

RUSA - Randonneurs USA
Promotes randonneuring (long distance cycling) within the United States. Includes membership information, events, FAQs, affiliations, merchandise, awards, publications, rules, administration, and contacts.

Tyler Hamilton Foundation
Works to provide opportunity and access for individuals affected by multiple sclerosis and for aspiring young athletes with a passion for cycling. Calendar of events, photos, list of supporters, donation information.

Ultra-Marathon Cycling Association (UMCA)
Information for cycling enthusiasts who enjoy rides of 100 miles and longer (from the people who bring you the Race Across AMerica - RAAM).

United States Deaf Cycling Association (USDCA)
Provides support, education, and awareness for deaf cyclists. Features such items as an events calendar, membership information, photo gallery, and affiliated cycling club listing.

USA Cycling
The United States' cycling organization, including USPRO (track), USCF (road), NORBA (mountain biking), and NCCA (collegiate cycling) programs.

Wheelmen, The
National, non-profit organization dedicated to keeping alive the heritage of American cycling, promoting the restoration and riding of early cycles (1918 or earlier). Features history, membership information, publications, swap meets, and meetings.

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