The women's 400 metres at the 2004 Summer Olympics as part of the athletics program were held at the Athens Olympic Stadium from August 21 to 24. The winning margin was 0.14 seconds.
The men's 400 metres hurdles at the 2004 Summer Olympics as part of the athletics program were held at the Athens Olympic Stadium from August 23 to 26. There were 35 competitors from 24 nations. The event was won by Félix Sánchez of the Dominican Republic, the nation's first medal in the men's 400 metres hurdles. Silver went to Danny McFarlane of Jamaica, returning to the podium in the event for the first time since 1992. Naman Keïta's bronze was France's first medal in the event in over 100 years; the last Frenchman to medal in the long hurdles was Henri Tauzin in 1900. The United States' five-Games gold medal streak ended; for only the second time in the history of the event, Americans competed but won no medals.
Sanya Richards-Ross is a retired Jamaican-American track and field athlete, who competed internationally for the United States in the 400-meter sprint. Her notable accolades in this event include being the 2012 Olympic champion, 2009 world champion, 2008 Olympic bronze medalist, and 2005 world silver medalist. With her victory in 2012, she became the second American woman to win the 400 meters at the Olympic Games and the first American woman to earn multiple global 400-meter titles. At this distance, Richards-Ross is also a six-time U.S. national champion.
Christine Ijeoma Ohuruogu, MBE is a British former track and field athlete who specialised in the 400 metres, the event for which she is an Olympic, World and Commonwealth champion. The Olympic champion in 2008, and silver medalist in 2012, she is a double World Champion, having won the 400 m at the 2007 and 2013 World Championships. She has also won six World championship medals in the women's 4 × 400 m relay as part of the Great Britain and Northern Ireland team and bronze Olympic medals with the women's 4 × 400 m relay at the 2008 Beijing Games and the 2016 Rio Games, her final Olympics. Ohuruogu shares with Merlene Ottey and Usain Bolt the record for medalling in most successive global championships – 9 – between the 2005 World Championships in Athletics and the 2016 Summer Olympics.
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.
The women's 4 × 400 metres relay event at the 2008 Olympic Games took place on 22 and 23 August at the Beijing Olympic Stadium.
The Women's 100 metres at the 2008 Summer Olympics took place on August 16 (heats) and 17 (final) at the Beijing National Stadium.
The women's 200 metres at the 2008 Summer Olympics took place on 19–21 August (final) at the Beijing National Stadium.
The Men's 5000 metres at the 2008 Summer Olympics took place on 20 and 23 August at the Beijing National Stadium. The winning margin was 4.98 seconds.
The women's 400 metres hurdles at the 2008 Summer Olympics took place on 17–20 August at the Beijing National Stadium.
The women's 3000 metres steeplechase at the 2008 Summer Olympics occurred on 15–17 August at the Beijing National Stadium, the first time this event had ever been held at the Olympics.
The women's 400 metres at the 2009 World Championships in Athletics was held at the Olympic Stadium on 15, 16 and 18 August. The world-leader prior to the competition, Sanya Richards, was regarded as the favourite in the event, although her previous failure to convert circuit dominance to major championship success raised some doubts. Reigning Olympic and world champion Christine Ohuruogu entered the championships as only the 25th fastest in the world that year, although a low-key run up also preceded her previous victories. Jamaicans Shericka Williams and Novlene Williams-Mills were predicted as possible medallists, while Russian Antonina Krivoshapka held the second fastest time in the world prior to the tournament.
The women's 400 metres competition at the 2012 Summer Olympics took place between 3–5 August at the Olympic Stadium.
The Women's 400 metres at the 2011 World Championships in Athletics was held at the Daegu Stadium on August 27, 28 and 29.
The women's 400 metres at the 2013 World Championships in Athletics was held at the Luzhniki Stadium on 10–12 August.
The women's 4 × 400 metres relay at the 2013 World Championships in Athletics was held at the Luzhniki Stadium on 16–17 August.
The men's 100 metres event at the 2016 Summer Olympics took place between 13–14 August at the Olympic Stadium. 84 athletes from 57 nations competed.
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 400 metres at the 2015 World Championships in Athletics was held at the Beijing National Stadium on 24, 25 and 27 August. Christine Ohuruogu of Great Britain entered the competition as the defending champion.
The women's 4 × 400 metres relay at the 2015 World Championships in Athletics was held at the Beijing National Stadium on 29 and 30 August.
