What sport does the word "peloton" refer to?

In a road bicycle race, the peloton (from French, originally meaning 'platoon') is the main group or pack of riders. Riders in a group save energy by riding close (drafting or slipstreaming) near or behind other riders. The reduction in drag is dramatic; in the middle of a well-developed group it can be as much as 40%..

Exploitation of this potential energy saving leads to very complex cooperative and competitive interactions between riders and teams, in race tactics peloton travels as an integrated unit (similar in some respects to birds flying in formation) with each rider making slight adjustments in response to their adjacent riders (particularly the rider in front of them).

Riders at the front are fully exposed to wind resistance, hence experience much higher fatigue loads. After a period of time at the front, they will maneuver farther back in the peloton to recover. With sufficient room to maneuver, the peloton appears in time lapse as a fluid cloud, with an endless stream of riders pushing from the back through to the leading edge, then falling away.