The 20 kilometre race walk is an Olympic athletics event that is competed by both men and women. The racewalking event is competed as a road race. Athletes must always keep in contact with the ground and the supporting leg must remain straight until the raised leg passes it.

Race walking, or racewalking, is a long-distance discipline within the sport of athletics. Although a foot race, it is different from running in that one foot must appear to be in contact with the ground at all times. Race judges carefully assess that this is maintained throughout the race. Typically held on either roads or running tracks, common distances range from 3,000 metres (1.9 mi) up to 100 kilometres (62.1 mi).