The women's 4 × 400 metres relay at the 2004 Summer Olympics as part of the athletics program was held at the Athens Olympic Stadium from August 27 to 28. The sixteen teams competed in a two-heat qualifying round in which the first three teams from each heat, together with the next two fastest teams, were given a place in the final race.
Allyson Michelle Felix is a retired American track and field athlete who competed in the 100 meters, 200 meters and 400 meters. She specialized in the 200 meters from 2003 to 2013, then gradually shifted to the 400 meters later in her career. At 200 meters, Felix is the 2012 Olympic champion, a three-time world champion (2005–2009), a two-time Olympic silver medalist, and the 2011 world bronze medalist. At 400 meters, she is the 2015 world champion, 2011 world silver medalist, 2016 Olympic silver medalist, 2017 world bronze medalist, and 2020 Olympic bronze medalist. Across the short distances, Felix is a ten-time U.S. national champion.
The 4 × 100 metres relay or sprint relay is an athletics track event run in lanes over one lap of the track with four runners completing 100 metres each. The first runners must begin in the same stagger as for the individual 400 m race. Each runner carries a relay baton. Before 2018, the baton had to be passed within a 20 m changeover box, preceded by a 10-metre acceleration zone. With a rule change effective November 1, 2017, that zone was modified to include the acceleration zone as part of the passing zone, making the entire zone 30 metres in length. The outgoing runner cannot touch the baton until it has entered the zone, and the incoming runner cannot touch it after it has left the zone. The zone is usually marked in yellow, frequently using lines, triangles or chevrons. While the rule book specifies the exact positioning of the marks, the colours and style are only "recommended". While most legacy tracks will still have the older markings, the rule change still uses existing marks. Not all governing body jurisdictions have adopted the rule change.
These are the official results of the men's 4 × 400 metres relay event at the 1992 Summer Olympics in Barcelona, Spain. There were a total number of 24 nations competing, with three qualifying heats.
The women's 4 × 400 metres relay competition at the 2012 Summer Olympics in London, United Kingdom was held at the Olympic Stadium on 10–11 August.
The Women's 4 × 400 metres relay event at the 2011 World Championships in Athletics was held at the Daegu Stadium on 2 and 3 September. Friday and Saturday. This is a change in schedule from previous years when all the relays were at the end of the program. This might necessitate a change in strategy to allow for team members involved in other events.
The women's 4 × 100 metres relay competition at the 2016 Summer Olympics in Rio de Janeiro, Brazil was held at the Estádio Olímpico João Havelange on 18–19 August.
The women's 4 × 400 metres relay competition at the 2016 Summer Olympics in Rio de Janeiro, Brazil was held at the Estádio Olímpico João Havelange on 19–20 August.
The women's 4 × 200 metres relay at the 2017 IAAF World Relays was held at the Thomas Robinson Stadium on 22–23 April.
The men's 4 × 400 metres relay at the 2017 World Championships in Athletics was held at the London Olympic Stadium on 12 August.
The women's 4 × 100 metres relay at the 2017 World Championships in Athletics was held at the London Olympic Stadium on 12 August.
The women's 4 × 400 metres relay at the 2018 IAAF World Indoor Championships took place on 3 and 4 March 2018.
The women's 400 metres at the 2018 IAAF World Indoor Championships took place on 2 and 3 March 2018.
The women's 4 × 400 metres relay event at the 2020 Summer Olympics took place on 5 and 7 August 2021 at the Japan National Stadium. There were 16 competing relay teams, with each team having at least 5 members from which 4 were selected in each round.
The mixed 4 × 400 metres relay event at the 2020 Summer Olympics took place on 30 and 31 July 2021 at the Japan National Stadium. There were 16 competing relay teams, with each team having 4 members. It was the first mixed-gender relay in athletics held at the Olympic Games, as part of a larger focus on gender equality by the International Olympic Committee.
The mixed 4 × 400 metres relay at the 2019 World Athletics Championships was held at the Khalifa International Stadium in Doha from 28 to 29 September 2019.
The women's 4 × 400 metres relay at the 2019 World Athletics Championships was held at the Khalifa International Stadium in Doha, Qatar, from 5 to 6 October 2019. In the final the Jamaican team were initially disqualified, but were reinstated as the bronze medallists upon appeal.
The women's 4 × 100 metres relay at the 2019 World Athletics Championships was held at the Khalifa International Stadium in Doha, Qatar, from 4 to 5 October 2019.
The men's 4 × 100 metres relay at the 2019 World Athletics Championships was held at the Khalifa International Stadium in Doha, Qatar, from 4 to 5 October 2019.
The women's 4 × 400 metres relay at the 2022 World Athletics Indoor Championships took place on 20 March 2022.
