A college football halftime is typically 20 minutes long. The length of the halftime can be reduced or increased as officials from both schools agree to the change. This total is different than it is for the National Football League, which typically has 12-minute halftimes.
An example of a time when the halftime period may be lengthened is during a bowl game. Typically, during a bowl game, marching bands from both schools will perform elaborate shows. Also, many bowl games, such as those that occur on New Year's Day or later, feature other activities during halftime, such as performances by national touring acts. This time not only serves as a rest period for the players, but allows spectators, both in the stadium and watching on television, to use bathroom facilities and seek out refreshments.