|Nicole's race of truth|
|Around the Academy:
GB cyclist Nicole Cooke explains what it's like to race against the clock.
The time trial is known as the race of truth because it's you against the clock.
Competitors ride special time trial bikes which have aerodynamic disc wheels rather than spokes.
They also wear streamlined helmets which reduces wind resistance and helps them go faster.
The riders set off from an elevated starting ramp which enables them to get a flying start.
In the individual time trial each rider races on their own against the clock.
The riders set off at separate 90-second intervals to cover the 24km course as quickly as possible.
The rider who covers the distance in the quickest time wins.
In the Olympics, the time trial is not a team event so you can't expect any help from other riders.
It's all about looking after number one.
You've got to pace yourself carefully. It's important not to do too much too soon and burn out.
The characteristics of the time trial is similar to the road race.
They are both endurance based, which means having to maintain high bursts of speed for long periods.
You need to be mentally tough too. You've got to be able to push through the pain barrier.