Team time trial

A team time trial (TTT) is a road-based bicycle race in which teams of cyclists race against the clock (see individual time trial for a more detailed description of ITT events).

Teams start at equal intervals, usually two, three or four minutes apart. Starting sequences will usually be based on individuals' times in previous events, but in TTTs conducted as part of a multi-stage road race (such as the Tour de France and the Giro d'Italia) the highest ranked teams will normally start later. Later starters have the advantage of knowing what times they need to beat (and this also makes the event more interesting to spectators).

Unlike individual time trials where competitors are not permitted to 'draft' (ride in the slipstream) behind each other, in team time trials, riders in each team employ this as their main tactic, each member taking a turn at the front while team-mates 'sit in' behind. After their turn, the lead rider will swing over, allowing the next rider to take the lead, while the leader goes to the back of the team.

Should one team overtake another, the overtaken team would be expected to drop back.

The main principle behind a TTT is that a few riders can ride at the front of the formation slightly above their aerobic threshold while others draft behind these riders. The riders then rotate, allowing some riders to recover while drafting behind fresher teammates. A rider who is riding at the front is said to be taking a pull.

Accelerations require harder efforts, and therefore it is desirable to have a smooth, steady pace. Different riders have different power outputs, lactate thresholds and aerodynamics. In order to equalize the efforts in order to not burn some riders off too early, the weaker riders take shorter pulls and stronger riders take longer pulls, all at the same speed to minimize the change in pace. A rider finishing a pull usually rotates to the very back of the formation, and the rider who was formerly behind this rider takes over. A rider who needs more time to recover may take a longer time at the back of the formation while the other teammates rotate in front of this rider. With increased desired speed, the riders take harder but shorter pulls at the front so as not to burn themselves up.

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