The women's 200 metres at the 2004 Summer Olympics as part of the athletics program were held at the Athens Olympic Stadium from August 24 to 26. The winning margin was 0.13 seconds. The winner had the second slowest reaction time in the final.
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.
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.
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 in 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.
Catherine Ann Murphy is a Welsh former athlete who competed mainly in the 200 metres and 400 metres. She finished fourth in the 4 × 400 metres relay at the 2004 Athens Olympics, fourth in the 400 metres at the 2003 World Indoor Championships, and won a bronze medal in the 4 × 400 metres relay at the 2005 European Indoor Championships.
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 200 metres at the 2008 Summer Olympics took place on 19–21 August (final) at the Beijing National Stadium. The winning margin was 0.19 seconds. The winner had the second fastest reaction time in the final.
The Women's 400 metres at the 2008 Summer Olympics took place on 16–19 August at the Beijing National Stadium. The winning margin was 0.07 seconds.
Natasha Monique Hastings is an American 400 meter track and field sprinter.
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 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 400 metres event at the 2016 Summer Olympics took place between 13–15 August at the Olympic Stadium.
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 200 metres at the 2015 World Championships in Athletics is scheduled to be held at the Beijing National Stadium on 26, 27 and 28 August.
The men's 400 metres hurdles at the 2015 World Championships in Athletics was held at the Beijing National Stadium on 22, 23 and 25 August.
The women's 400 metres hurdles at the 2015 World Championships in Athletics was held at the Beijing National Stadium on 23, 24 and 26 August.
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.
The women's 400 metres at the 2017 World Championships in Athletics was held at the London Olympic Stadium on 6−7 and 9 August.
The women's 400 metres event at the 2020 Summer Olympics took place from 3 to 6 August 2021 at the Japan National Stadium. 45 athletes from 34 nations competed. Shaunae Miller-Uibo won the gold medal by 0.84 seconds in a personal best of 48.36 secs, a time which ranks her sixth on the world all-time list. In successfully defending her title, Miller-Uibo joined Marie-Jose Perec as the only women to win two Olympic 400 metres titles.
