RoadBikeRider.com An electronic magazine for road bike riders, from Ed Pavelka and Fred Matheny. Also has a weekly email newsletter with numerous interesting and informative articles.
Cyclingfans.com - Live video feeds of most of the major races.
Steephill TV - Live video feeds of most of the major races.
Training, Fitness, Physiology, etc.
Cycling Performance Tips In depth info on cycling training, nutrition, physiology, and more, including explanation of lactate threshold, VO2 Max and other concepts.
Randonneurs USA Describes the US branch of the randonneuring community, consisting of cyclists who attempt to qualify, through a series of brevets, for the ultimate Paris-Brest-Paris event (1200 km with a time limit of 90 hours), which takes place every four years.
Bicycle Calculators Compute speed, power, bike frame geometry, and a host of other specialized cycling functions
Crazy Guy on a Bike Non-commercial site devoted to bicycle touring journals. Close to 200 different journals are contained here now and you can create your own, too.
Sheldon Brown / HarrisCyclery.com Hundreds of pages on all aspects of bicycle maintenance. Technical information on older cycling technologies, as well as essays on proper fit, bike touring, tandems, family cycling, and our favorite, Real MAN Saddles.
Team in Training The Leukemia and Lymphoma Society's Team in Training program is gearing up for another recruitment season. Join the world's largest endurance sports training program.
Impressions from bicycle travels Cycling slide shows from the U.S. and Asia by Paul Jeurissen and Grace Johnson. Web pages in English or Dutch. Great photography...take a look.
CyclingForum.com An open forum where you can exchange advice and opinions on tech, health, tours or any cycling related topic with other members of the cycling community.
RoadBikeREVIEW.com Includes classifieds, product ratings, and discussion groups concerning specific components/brands.
BicycleSafe.com Tips on bicycle safety by Michael Bluejay in an article "How to Not Get Hit by Cars." Some good suggestions for dealing with some real-world scenarios.