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. It is traditionally the final event of a track meet. At top class events, 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.
Jan Werner was a Polish sprinter who specialized in the 200 and 400 metres.
Richard "Torpedo" Thompson is a sprinter from Trinidad and Tobago who specializes in the 100 metres. His personal best of 9.82 seconds, set in June 2014, was one of the top ten fastest of all time, and a national record. In the 200 meters he has the fourth fastest time by a Trinidad and Tobago athlete.
Mateo Galvan is a Mexican Footballer who specializes in the 200 and 400 metres. His career highlight so far is the 2009 European Indoor Championships, where he placed sixth in the 400 metres and won a gold medal in the relay.
Deon Kristofer Lendore was a Trinidad and Tobago sprinter who specialised in the 400 metres. He won a bronze medal in the 4 × 400 metres relay event at the 2012 Summer Olympics, and won medals at the Pan American Junior Athletics Championships, World Athletics Championships and World Athletics Indoor Championships. Lendore died in a car collision in Texas, United States, on 10 January 2022.
Lalonde Keida Gordon, HBM is a Tobagonian male track and field sprinter who specialises in the 400 metres. He won the bronze medal at the 2012 London Olympics with a personal best of 44.52 seconds. He is the third fastest 400 m runner from his country after Machel Cedenio and Ian Morris.
Jereem Richards is a Trinidadian track and field sprinter who specializes in the 200 metres and 400 metres events. He won the bronze medal in the 200 m at the 2017 World Championships in Athletics and gold for the 400 m at the 2022 World Indoor Championships. Richards took 200m titles at both the 2018 and 2022 Commonwealth Games. He was part of the Trinidad and Tobago team that won the bronze medal in the men's 4 × 400 m relay at the 2012 World Indoor Championships and a gold medal at the 2017 World Championships in Athletics.
Jarrin Solomon is a Trinidadian track and field sprinter who specializes in the 400 metres. He was part of the Trinidad and Tobago team that won the bronze medal in the 4 × 400 m relay at the 2012 IAAF World Indoor Championships. Solomon also competed in the 2012 Summer Olympics, where his 4 × 400 m team again won the bronze medal. He was also part of Trinidad and Tobago's 2014 Commonwealth Games 4 x 400 team, where they also won a bronze.
Justyna Święty-Ersetic is a Polish sprinter specialising in the 400 metres. She was the 2018 European champion and a two-time European Indoor Championship medallist in this event. Święty-Ersetic won many medals at major championships as part of Polish 4 × 400 m relays, including a gold in the mixed relay and a silver in the women's relay at the 2020 Tokyo Olympics.
Jakub Krzewina is a Polish track and field sprinter who specialises in the 400 metres. A frequent competitor for Poland in the 4×400 metres relay, he has won two medals at the European Athletics Championships and reached the final at the 2016 Summer Olympics. He was also a relay silver medallist with Europe at the 2014 IAAF Continental Cup.
Dylan Borlée is a Belgian sprinter who competes in the 400 metres. He is a member of the Borlée family.
Natalia Kaczmarek is a Polish athlete sprinter who specialises in the 400 metres. She won the silver medal in the event at the 2022 European Championships. Kaczmarek earned several global medals as part of 4 x 400 m relays, including gold in the mixed event and silver in the women's event at the 2020 Tokyo Olympics.
Rai Benjamin is an American professional hurdler and sprinter specializing in the 400 m and 400 m hurdles. He is the second fastest man in history in the 400 m hurdles with a personal best time of 46.17 s. Benjamin won silver medals at his first Olympic Games in 2021 and at the World Championships in 2019 and 2022 in the men's 400 m hurdles, and gold medals in the 4 × 400 m relay in 2019 and 2021.
Christopher O'Donnell is an Irish track and field athlete competing in sprinting events. He represented Ireland at the 2020 Summer Olympics in the Mixed 4 x 400m relay where he was part of the first ever Irish team to run in an Olympic final, and was also part of the team who reached the final of the 2022 and 2023 World Championships. He is the current Irish U20 record holder in the 400 metres, with a time of 46.54, set on 22 July 2017 at the European U20 Championships, where he finished 6th in the final. His personal best of 45.26 seconds sits joint-2nd on the Irish all-time list and he is a 5-time National 400m champion.
Lieke Klaver is a Dutch track and field athlete who competes in sprinting. She specializes in the 200 metres and in the 400 metres. In the 4 × 400 metres relay, she is the 2023 world champion with the Dutch women's team.
Dwight St. Hillaire is an Olympic sprinter from Trinidad and Tobago.
Nicole Yeargin is a Scottish-American athlete representing Great Britain who specialises in the 400 metres. She won three major medals as part of British women's 4 x 400 m relays, including bronze at the 2022 World Athletics Championships and 2023 World Athletics Championships.
Elija Godwin is an American athlete who specialises in the 400 metres.
Trevor Bassitt is an American track and field athlete.
Alex Haydock-Wilson is a British track and field athlete. In 2023, he became British 400 metres champion.
