Exercise machines are networked together to provide a user with an indication of the user's performance level compared to the performance levels of other users. Simulated characters corresponding to the users are shown on one or more displays viewable by the users. The simulated characters have a primary movement that may differ in type from the primary movement used in achieving the exercise by the corresponding user. Further, the primary movement used to achieve exercise by one user may differ from the primary movement used to achieve exercise by another user. Exertion transducers provide signals that are used in calculating parameters such as speed and acceleration. Biometric data may be measured from the users during exertion and displayed or uploaded onto the network.