4 × 400 metres relay

Athletics
4 × 400 metres relay
World records
Men United States (Andrew Valmon, Quincy Watts, Butch Reynolds, Michael Johnson) 2:54.29 (1993)
Women Soviet Union (Tatyana Ledovskaya, Olga Nazarova, Mariya Pinigina, Olga Bryzgina) 3:15.17 (1988)
Mixed United States (Vernon Norwood (M), Shamier Little (F), Bryce Deadmon (M), Kaylyn Brown (F)) 3:07.41 (2024)
Olympic records
Men United States (Christopher Bailey, Vernon Norwood, Bryce Deadmon, Rai Benjamin) 2:54.43 (2024)
Women Soviet Union (Tatyana Ledovskaya, Olga Nazarova, Mariya Pinigina, Olga Bryzgina) 3:15.17 (1988)
Mixed United States (Vernon Norwood (M), Shamier Little (F), Bryce Deadmon (M), Kaylyn Brown (F)) 3:07.41 (2024)
World Championship records
Men United States (Andrew Valmon, Quincy Watts, Butch Reynolds, Michael Johnson) 2:54.29 (1993)
Women United States (Gwen Torrence, Maicel Malone-Wallace, Natasha Kaiser-Brown, Jearl Miles) 3:16.71 (1993)
Mixed United States (Justin Robinson (M), Rosey Effiong (F), Matthew Boling (M), Alexis Holmes (F)) 3:08.80 (2023)

The 4 × 400 metres relay or long relay is an athletics track event in which teams consist of four runners who each complete 400 metres or one lap, totaling 1600 meters. It is traditionally the final event of a track meet. The first leg and the first bend of the second leg are run in lanes. Start lines are thus staggered over a greater distance than in an individual 400 metres race; the runners then typically move to the inside of the track. The slightly longer 4 × 440 yards relay, on an Imperial distance, was a formerly run British Commonwealth and American event, until metrication was completed in the 1970s.