The 400 metres, or 400-metre dash, is a sprinting event in track and field competitions. It has been featured in the athletics programme at the Summer Olympics since 1896 for men and since 1964 for women. On a standard outdoor running track, it is one lap around the track. Runners start in staggered positions and race in separate lanes for the entire course. In many countries, athletes previously competed in the 440-yard dash (402.336 m)—which is a quarter of a mile and was referred to as the 'quarter-mile'—instead of the 400 m (437.445 yards), though this distance is now obsolete.
Angela Williams is an American athlete. Williams attended the University of Southern California, graduating in 2002. She won the Honda Sports Award as the nation's best female track and field competitor in 2002, which qualified her as a nominee for the Honda-Broderick Cup, awarded to the best overall female collegiate athlete in 12 sports. She was named the winner of that award also in 2002.
William Collins is an American sprinter, originally running for Mount Vernon High School in Westchester County, New York, where he won four state titles and later at Texas Christian University where he achieved "All-American" status.
Irene Romona Obera is an American track and field athlete, specializing in sprinting events. Over an extended career, she has set numerous world records and has won numerous world championships. She is currently a member of the W70 world record holding 4x100 metres relay team. She also holds the current American record in the W60 and W75 100 metres and the W75 200 metres.
Kenneth Edward Dennis was an American track and field athlete. As a Masters sprinter he held the world record in the 100 metres in several age groups. Standing 5'3" the short Dennis was known for his soft-spoken nature, his greetings of "Hey man" or "Go man" and his blazing fast starts.
Athletics at the 2014 South American Games took place between March 13–16, 2014. The event was held at the Estadio Nacional Julio Martínez Prádanos in Santiago, Chile. A total of 44 events were contested, 22 by men and 22 by women. Detailed reports were given by Eduardo Biscayart for the IAAF. A total of 29 games records (GR), 7 national records (NR), and 11 world leading marks were set.
The Balkan Athletics Indoor Championships, also known as the Balkan Indoor Games, is an annual international indoor track and field competition between athletes from the Balkan Peninsula. Following a test event in 1991, it was officially launched in 1994. Organised by the Association of the Balkan Athletics Federations (ABAF), it is typically held in February. The competition complemented the long-running annual outdoor track and field tournament: the Balkan Games.
Japan 
Brazil 
South Africa 
Sweden 
Italy 
United States 
India