Time trialist

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Fabian Cancellara riding a time-trial bicycle with aerodynamic wheels and aero bars.

A time trialist is a road bicycle racer who can maintain high speeds for long periods of time, to maximize performance during individual or team time trials. The term cronoman, or chronoman, is also used to refer to a time trialist; this term is often used by Davide Cassani in his commentaries.

In a traditional individual time trial, riders set off alone (not in a group or peloton) at intervals, typically anything from one to five minutes, and try to complete the course in as short a time as possible. In order to maximize the overall speed a time trialist must be able to maintain a steady effort throughout the event, of which the best measure is believed to be the rider's power at lactate threshold (LT) or aerobic threshold (AT). The best time trialists (such as Miguel Indurain, David Millar, Ellen van Dijk, Tony Martin and Fabian Cancellara), are believed to have very high power output at LT/AT, which they can then maintain for the duration of the time trials.

To be a successful time trialist, a cyclist must have exceptional aerodynamic posture and be able to take in plenty of oxygen. Aerodynamic performance can also be improved by riders using 'skin suits', overshoes and streamlined helmets.

Bike technology is also important in time trials. By using aerodynamic components, a bicycle can be designed to minimize its drag coefficient, allowing a rider to drop his or her time by minutes during a long course.

Time trials may also form individual stages of stage races. By incorporating time trial specialists into a cycling team, the team can lower its aggregate time dramatically.

Famous time trial specialists[edit]

Some succesful time trialists: