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.
Michael Blackwood is a Jamaican male track and field athlete, who specialized in the 400 meters, his personal best being 44.60 set during his win at the 2002 IAAF World Cup. He was chosen as the Jamaica Sportsman of the Year in 2002, in that same year he was the world number one rank by IAAF in the 400 meters. He is the brother of Catherine Scott who earned a silver medal in the 2000 Sydney Olympic Games. Blackwood won the NAIA national 400 meters title in 1997. He is the winner of Jamaica 400 meters national championships three times. Blackwood holds the Big 12 conference record in the 400 meters since 2000 in the time of 44.69. He is an alumnus of The University of Oklahoma.
LaShawn Merritt is a retired American track and field athlete who competed in sprinting events, specializing in the 400 metres. He is a former Olympic champion over the distance and his personal best of 43.65 seconds makes him the eleventh fastest of all time.
Amantle Montsho is a female sprinter from Botswana who specializes in the 400 metres. She represented her country at the 2004 and 2008 Summer Olympics, reaching the final at the latter edition. She was the first woman to represent Botswana at the Olympics. She has also competed at the World Championships in Athletics and the IAAF World Indoor Championships, and is the former World Champion over the 400m, winning in a personal best time of 49.56 in Daegu.
Yousef Ahmed Masrahi is a Saudi Arabian track and field athlete, who specialises in the 400 metres sprint. His personal best time for the event is 43.93 seconds, set in 2015, and is the Asian record.
The sprint hurdles at the Summer Olympics have been contested over a variety of distances at the multi-sport event. The men's 110 metres hurdles has been present on the Olympic athletics programme since the first edition in 1896. A men's 200 metres hurdles was also briefly held, from 1900 to 1904. The first women's sprint hurdling event was added to the programme at the 1932 Olympics in the form of the 80 metres hurdles. At the 1972 Games the women's distance was extended to the 100 metres hurdles, which is the current international standard.
The 400 metres hurdles at the Summer Olympics is the longest hurdling event held at the multi-sport event. The men's 400 m hurdles has been present on the Olympic athletics programme since 1900, with a sole gap at the 1912 Summer Olympics. The women's event was added to the programme over eighty years later, at the 1984 Olympics. It is the most prestigious 400 m hurdles race at elite level.
The steeplechase at the Summer Olympics has been held over several distances and is the longest track event with obstacles held at the multi-sport event. The men's 3000 metres steeplechase has been present on the Olympic athletics programme since 1920. The women's event is the most recent addition to the programme, having been added at the 2008 Olympics. It is the most prestigious steeplechase track race at elite level.
The 2007 USA Outdoor Track and Field Championships was organised by USA Track & Field and held from June 20 to 24 at the IU Michael A. Carroll Track & Soccer Stadium in Indianapolis, Indiana. The four-day competition served as the national championships in track and field for the United States and also the trials for the 2007 World Championships in Athletics.
The 2003 USA Outdoor Track and Field Championships was organised by USA Track & Field and held from June 19 to 22 at the Cobb Track & Angell Field in Palo Alto, California. The four-day competition served as the national championships in track and field for the United States and also the trials for the 2003 World Championships in Athletics.
The 100 metres at the World Championships in Athletics has been contested by both men and women since the inaugural edition in 1983. It is the second most prestigious 100 m title after the 100 metres at the Olympics. The competition format typically has two or three qualifying rounds leading to a final between eight athletes. Since 2011 a preliminary round has been held, where athletes who have not achieved the qualifying standard time compete to enter the first round proper.
The 200 metres at the World Championships in Athletics has been contested by both men and women since the inaugural edition in 1983. It is the second most prestigious title in the discipline after the 200 metres at the Olympics. The competition format typically has two or three qualifying rounds leading to a final between eight athletes.
The 800 metres at the World Championships in Athletics has been contested by both men and women since the inaugural edition in 1983. It is the second most prestigious title in the discipline after the 800 metres at the Olympics. The competition format typically has two qualifying rounds leading to a final between eight athletes.
The 1500 metres has been contested at the World Championships in Athletics by both men and women since the inaugural edition in 1983. It is the second most prestigious title in the discipline after the 1500 metres at the Olympics. The competition format typically has two qualifying rounds leading to a final between twelve athletes. It is one of two middle-distance running events on the programme, alongside the World Championship 800 metres.
The 5000 metres at the World Championships in Athletics has been contested by men since the inaugural edition in 1983 and by women since 1995. Women competed over 3000 metres from 1980 to 1993, in line with championship standards of the time. It is the shortest long-distance running event at the competition, the 10,000 metres and marathon being the other two such events on the programme. It is the second most prestigious title in the discipline after the 5000 metres at the Olympics. The competition format typically has a two-race heats stage that leads directly to a final between fifteen athletes.
The 10,000 metres at the World Championships in Athletics has been contested by men since the inaugural edition in 1983 and by women since the subsequent edition in 1987. It is the second most prestigious title in the discipline after the 10,000 metres at the Olympics. The competition format is a straight final with typically between twenty and thirty participants. Before 1999, the event had two qualifying heats leading to a final.
The marathon at the World Championships in Athletics has been contested by both men and women since the inaugural edition in 1983. It is the second most prestigious global title in the discipline after the marathon at the Olympics. From 1997 to 2011 it hosted the World Marathon Cup team event. It currently forms part of the World Marathon Majors circuit, which includes the six top annual races. The competition format has separate men's and women's races, which both serve as a straight final. Participation typically numbers between sixty and eighty runners per race. The event usually starts and ends in the main stadium, with the rest of the race taking place on the surrounding roads of the host city.
The 4×100 metres relay at the World Championships in Athletics has been contested by both men and women since the inaugural edition in 1983. It is the second most prestigious title in the discipline after the 4×100 metres relay at the Olympics. The competition format typically has one qualifying round leading to a final between eight teams. As of 2015, nations can qualify for the competition through a top eight finish at the previous IAAF World Relays event, with the remaining teams coming through the more traditional route of ranking highly on time in the seasonal lists. This system was modified due to the postponement of 2023 World Athletics Relays to 2024: therefore, the eight teams directly qualified are those of the 2022 World Championships, in Eugene, completed by eight more 2022-2023 top lists' teams.
Salwa Eid Naser is a Nigerian-born Bahraini sprinter who specialises in the 400 metres. She was the 2019 World champion with the third fastest time in history of 48.14 seconds, becoming the youngest-ever champion in the event and also the first woman representing an Asian nation to win that event at a World Championships. The mark places her only behind contested results of Marita Koch and Jarmila Kratochvílová. Over the distance, at only 19, Naser was the 2017 World silver medallist. She has also won, as a member of the Bahraini mixed-gender 4x400 m relay team, the 2019 World Championships bronze medal.
As a signatory to the World Anti-Doping Code, the International Association of Athletics Federations (IAAF) prohibits the use of banned performance-enhancing substances by competitors at the World Championships in Athletics. A list of WADA-banned substances is regularly published to the public and amended as scientific knowledge expands. The IAAF and anti-doping bodies undertake in-competition sampling of athletes blood and urine in order to detect where athletes have taken banned substances. This is also complemented by out-of-competition tests during the tournament and in the preceding period.
Antonio Watson (JAM)
Marileidy Paulino (DOM)
