Photos: Exercise bike races all comers, via Web

A view from the integrated console. As you can see, the rider is on a downhill segment of the Ironman course and is going somewhat slow. During a race, riders will crank over 200 watts. In solo training, riders can ride these simulated courses or try to maintain a certain watt output. There's a wide variety of training programs.

Photo by James Martin/CNET News.com