A paceline is a formation in which riders (especially bicycle racers) travel in a line, one close behind the other, in order to conserve energy and travel faster by riding in the draft of the riders in front.
Pulling is when a rider takes a turn at the front of a "paceline," or group of riders in a row. While the rider at the front will experience full wind resistance, the drag of the riders behind is reduced by up to 40%. Maintaining high speed while pulling is an extremely exhausting activity, so each rider will "pull" for 30 seconds to a minute, signal the rider behind, and then move to the side and coast to the back of the paceline. The rider behind then "pulls," and rotating through the group in this manner keeps everyone fresh and maintains high speed.
PelotonThis is the French word for the main Group of cyclists during a cycle stage race or one day classic road race from the French, literally meaning little ball or platoon. Peloton is also thought to be derived from the English word pellet meaning field, bunch or pack.When traveling together in a race the pack of riders is normally called a 'peloton' (although pack is sometimes used). If you see a smaller group of riders in single file they are most likely in a 'paceline'.A group of bicyclists is called a "blur" of bicyclists.