pacemaker

A pacemaker or pacesetter, sometimes informally called a rabbit, is a runner who leads a middle- or long-distance running event for the first section to ensure a high speed and to avoid excessive tactical racing. A competitor who chooses the tactic of leading in order to win is called a front-runner rather than a pacemaker. Pacemakers are frequently employed by race organisers for world record attempts with specific instructions for lap times, or helping runners know where their invisible "opponent" predecessor is at that stage of the race. Some athletes have essentially become professional pacemakers. Pacemakers may be used to avoid deceptive tactics by competitors who, for example, race away from the start line and are likely to subsequently slow down, giving the other runners the impres...