Diane Leather became the first woman to run a mile in less than five minutes.

Diane Susan Leather Charles née Leather was an English athlete who was the first woman to run a sub-5-minute mile.

The world record in the mile run is the fastest time set by a runner in the middle-distance track and field event. World Athletics is the official body which oversees the records. Hicham El Guerrouj is the current men's record holder with his time of 3:43.13, while Faith Kipyegon has the women's record of 4:07.64. Since 1976, the mile has been the only non-metric distance recognized by the IAAF for record purposes. In international competitions such as the Olympics the term "metric mile" is sometimes used to refer to a distance of 1,500 meters, which is 109.344 meters shorter than an Imperial mile, even though four "full" laps of a 400 meter track is equal to 1,600 meters.