Merlene Joyce Ottey is a Jamaican-Slovenian former track and field sprinter. She began her career representing Jamaica in 1978, and continued to do so for 24 years, before representing Slovenia from 2002 to 2012. She is ranked fourth on the all-time list over 60 metres (indoor), eighth on the all-time list over 100 metres and sixth on the all-time list over 200 metres. She is the current world indoor record holder for 200 metres with 21.87 seconds, set in 1993. She was named Jamaican Sportswoman of the Year 13 times between 1979 and 1995.
Veronica Campbell Brown Order of Distinction is a retired Jamaican track and field sprinter, who specialized in the 100 and 200 meters. An eight-time Olympic medalist, she is the second of three women in history to win two consecutive Olympic 200 m events, after Bärbel Wöckel of Germany at the 1976 and 1980 Olympics and fellow countrywoman Elaine Thompson-Herah at the 2016 and 2020 Olympics. Campbell Brown is one of only nine athletes to win world championships at the youth, junior, and senior level of an athletic event.
Muriel Hurtis-Houairi is a French track and field athlete. She came to prominence in 2002 when she won the 200 m gold medals at both the European Indoor Championships and the European Athletics Championships. The following year she added the World Indoor title and won a bronze medal at the 2003 World Championships in Athletics and a gold in the 4×100 metres relay with France.
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.
Sanya Richards-Ross is a retired 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.
De'Hashia Tonnek "DeeDee" Trotter is an American athlete. Trotter is a former NCAA national champion in the 400m, and competed in the 2004, 2008, and 2012 Summer Olympics. There, she was a two-time Olympic gold medalist in the 4 × 400 m relay, in addition to a bronze medalist in the 2012 400m event. She placed 5th in the same event in 2004. Trotter is currently a brand ambassador for international company Education First, and a global motivational speaker.
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.
Olga Tereshkova is a Kazakhstani former sprinter who specialized in the 400 metres.
Nataliya Pyhyda is a Ukrainian track and field sprinter who specializes in the 200 and 400 metres. Her personal best times are 22.82 seconds (2008) and 50.62 seconds (2015), respectively.
Antonina Vladimirovna Krivoshapka is a Russian sprinter who specializes in the 400 metres. She competed at the 2012 Summer Olympics, where her team originally was awarded a silver medal in the 4 × 400 m relay. Krivoshapka and her teammates were later stripped of this medal after Krivoshapka tested positive for the steroid turinabol.
Monica Hargrove is an American track and field athlete who specializes in the 200- and 400-meter dash. She won the silver medal at the 2006 IAAF World Indoor Championships as part of the 4×400-meter relay team, and also set a world best in the sprint medley relay at the Penn Relays that year.
Antonina Yefremova is a Ukrainian sprinter who specializes in the 400 metres. Yefremova received a two-year ban in 2012 for using testosterone at the 2011 World Athletics Championships.
The athletics competitions at the 2012 Olympic Games in London were held during the last 10 days of the Games, on 3–12 August. Track and field events took place at the Olympic Stadium in east London. The road events, however, started and finished on The Mall in central London.
The women's 4 × 400 metres relay competition at the 2012 Summer Olympics in London, United Kingdom was held at the Olympic Stadium on 10–11 August.
Gulustan Mahmood Ieso, also known as Kolestan Mahmoud, is an Iraqi track and field athlete who competes in sprinting events. She holds a number of Iraqi records and helped win her country's first ever women's medals at the Asian Athletics Championships in 2011. She lost these medals as her doping sample at that competition came back positive for the banned stimulant methylhexaneamine, receiving a one-year ban for the infraction.
Francena Lynette McCorory is a retired American track and field athlete, known primarily for running the 400 meters. She was the 2011 World bronze medalist in the 400 meters and was a member of the gold medal-winning 2012 and 2016 United States Olympic 4 x 400 m relay teams. She was the IAAF 400 meter Indoor World Champion in 2014. McCorory retired in 2021.
Shaunae Miller-Uibo is a Bahamian track and field sprinter who competes in the 200 and 400 metres. She is a two-time Olympic champion after winning the women's 400 metres at the 2016 Rio Olympics and again at the 2020 Tokyo Olympics.
Phyllis Chanez Francis is an American track and field athlete. She won the gold medal at the 2017 World Championships in the 400 metres and 4 × 400 metres relay events.
Dominique Blake is a Jamaican track and field athlete. Blake won a gold medal at the 2010 Central American and Caribbean Games and was accidentally awarded a bronze medal at the 2012 Summer Olympics. She was banned for 4+1⁄2 years after testing positive for methylhexanamine and returned to athletic competition in 2017.
