The 400 metres, or 400-metre dash, is an endurance race 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.
The pentathlon or women's pentathlon is a combined track and field event in which each woman competes in five separate events over one day. The distance or time for each event is converted to points via scoring tables, with the overall ranking determined by total points. Since 1949 the events have been sprint hurdling, high jump, shot put, long jump, and a flat race. The sprint hurdles distance was 80 m outdoors until 1969 and thereafter 100 m; in indoor pentathlon the distance is 60 m. The flat race was 200 m until 1976 and thereafter 800 m. In elite-level outdoor competition, the pentathlon was superseded in 1981 by the heptathlon, which has seven events, with both 200 m and 800 m, as well as the javelin throw. Pentathlon is still contested at school and masters level and indoors.
The 1500 metres or 1,500-metre run is the foremost middle distance track event in athletics. The distance has been contested at the Summer Olympics since 1896 and the World Championships in Athletics since 1983. It is equivalent to 1.5 kilometers or approximately 15⁄16 miles.
Tatyana Sergeyevna Chernova is a Russian former heptathlete. She was originally awarded the bronze medals at the 2008 and 2012 Summer Olympics before being stripped of them for doping. A serial offender, all of her athletics results from 17 August 2008 to 5 February 2016 were disqualified due to doping.
Shannon Rowbury is an American middle-distance runner from San Francisco, California. After competing collegiately for Duke University, she turned professional in 2007. Rowbury has represented the United States at the 2008, 2012, and 2016 Summer Olympics. She also represented the United States at the World Championships in 2009, 2011, 2013, 2015 and 2017, winning the bronze medal in the 1500 meters in 2009. In 2015, Rowbury helped set the world record with the U.S. team for the distance medley relay event, and set a then-American record for 1500 meters on July 17, 2015, breaking Mary Slaney's 32 year-old mark with a time of 3:56.29.
The 16th IAAF World Indoor Championships in Athletics were held between March 17 and 20, 2016 in Portland, Oregon, United States.
Nadine Broersen is a Dutch track and field athlete, specializing in the heptathlon and high jump. She holds the current national record in the high jump with 1.94m. She is the 2014 World Indoor pentathlon champion. She competes for the track and field club AV Sprint in Breda.
Sifan Hassan is an Ethiopian-born Dutch middle- and long-distance runner. She won two gold medals at the 2019 World Championships, in the 1500 metres and 10,000 metres events, becoming the only athlete in history to win both events at a single World Championships or Olympic Games.
Chanelle Price is an American middle-distance runner who specializes in the 800-meter run. She has a personal record of 1:59.10 for the distance. She was the gold medalist at the IAAF World Indoor Championships in 2014.
The men's 800 metres at the 2016 IAAF World Indoor Championships took place on March 18 and 19, 2016.
The women's 800 metres at the 2016 IAAF World Indoor Championships took place on March 19 and 20, 2016.
The women's 1500 metres at the 2016 IAAF World Indoor Championships took place on March 18 and 19, 2016.
The women's 3000 metres at the 2016 IAAF World Indoor Championships took place on March 20, 2016.
The women's pentathlon at the 2016 IAAF World Indoor Championships took place on March 18, 2016.
The masters men's 800 metres was an exhibition event for men in the M60 division at the 2016 IAAF World Indoor Championships held on 19 March, 2016.
The women's 3000 metres at the 2018 IAAF World Indoor Championships took place on 1 March 2018.
The women's 800 metres at the 2018 IAAF World Indoor Championships took place on 3 and 4 March 2018.
The women's 4 × 400 metres relay at the 2018 IAAF World Indoor Championships took place on 3 and 4 March 2018.
The women's 1500 metres at the 2018 IAAF World Indoor Championships took place on 2 and 3 March 2018.
The women's 10,000 metres at the World Athletics Championships was held at the Khalifa International Stadium in Doha, Qatar, on 28 September 2019.
