"Since 1973, our mission has been to inspire people of all ages to travel by bicycle for fitness, fun, and self-discovery." Routes and maps, tours, events and gatherings are all covered by this site. Also, check out their "Cyclists' Yellow Pages."
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The mission of Bicycle Colorado is to "...encourage and promote bicycling, increase safety, improve conditions, and provide a voice for cyclists in Colorado." Has free maps covering the state that show important cycling information.
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Cycling King is a good resource for road bike enthusiasts, especially those that are training for an event. The site has training tips and guides, spreadsheet downloads, and a forum.
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USA Cycling is the official cycling organization recognized by the U.S. Olympic Committe and is responsible for identifying, training and selecting cyclists to represent the United States in international competitions.
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A good source all for all around mountain biking information. This site has articles on repairs, skills, trails, and more.
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A community website for mountain bikers. This site has a couple blogs, forums, maps, photos, videos, photos and more. This is an active site that has a lot to offer cyclists.
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