The 400 metres, or 400-meter dash, is a sprint 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.
Brian Mariano is a Curaçaoan sprinter who specializes in the 100 and 200 metres and starts for the Netherlands, formerly for Netherlands Antilles until October 1, 2010. He finished fourth-fastest in the men's 60 metres heats at the 2010 IAAF World Indoor Championships in Doha, but was disqualified in the semifinals. He won a bronze medal in the 4x100 metres relay at the 2010 Central American and Caribbean Games in Mayaguez alongside Prince Kwidama, Curtis Cock and Churandy Martina.
Jacques Borlée is a former Belgian athlete, and the father and coach of athletes Olivia Borlée, Kevin, Jonathan and Dylan Borlée. He was voted European Athletics Coach of the Year in 2011.
Liemarvin Bonevacia is a Dutch sprinter specialising in the 400 metres. He won bronze medals in the event at the 2016 and 2024 European Athletics Championships, and the 2017 and 2021 European Indoor Championships. Bonevacia also earned five major medals for the 4 × 400 m relays, either men's or mixed, including silver medal in the men's relay at the 2020 Tokyo Olympics.
Lisanne de Witte is a Dutch track and field athlete who competes in sprinting. She specialises in the 400 metres, where she held the Dutch record with her personal best time of 50.77 seconds from 2018 to 2021.
Dylan Borlée is a Belgian sprinter who competes in the 400 metres. He is a member of the Borlée family.
Matthew Boling is an American track and field athlete specializing in the sprints and long jump. He won four gold medals at the 2019 Pan American U20 Championships in the 100 m, 200 m, 4 × 100 m relay and 4 × 400 m relay, and helped set world under-20 records in both of the relay races for the United States. He also ran in the semi-final for the American 4 × 400 m relay team at the 2018 World U20 Championships that went on to earn silver in the final. Boling would later go on to win a gold medal at the 2023 World Athletics Championships in the mixed 4 x 400 m relay, and would help set a world record for the event in the process.
Femke Bol is a Dutch track and field athlete who competes in hurdling and sprinting. She specialises in the 400 metres hurdles, where she is the 2023 World Champion, and in the 400 metres, where she is the 2024 World Indoor Champion and the short track world record holder. In the 4 × 400 metres relay, she is the 2023 World Champion and the 2024 World Indoor Champion with the Dutch women's team and the 2024 Olympic Champion with the Dutch mixed team.
Lieke Klaver is a Dutch track and field athlete who competes in sprinting. She specializes in the 200 metres and in the 400 metres. In the 4 × 400 metres relay, she is the 2023 World Champion and the 2024 World Indoor Champion with the Dutch women's team and the 2024 Olympic Champion with the Dutch mixed team.
Zoë Frederique Sedney is a Dutch athlete who competes in the hurdles, 100 metres, 200 metres, 400 metres and 4 × 100 metres relay. Sedney won two gold medals at the 2017 European Youth Summer Olympic Festival. As a senior in 2021, she competed in both the European Indoor Championships and the Summer Olympics. In 2022, she became part of the 4 × 100 metres Dutch relay team, competing together with her older sister Naomi Sedney.
Jochem Dobber is a Dutch track and field sprint athlete who specialises in the 400 metres. He was a gold medallist in the 4 × 400 metres relay with the Dutch team at the 2021 European Athletics Indoor Championships, setting a Dutch record.
Ramsey Angela is a Dutch sprinter specialising in the 400 metres and 400 metres hurdles. He won the bronze medal in the 400 m hurdles at the 2021 European Under-23 Championships. Angela earned four major medals as part of Dutch men's 4 × 400 m relays, including silver at the 2020 Tokyo Olympics.
Helena Ponette is a Belgian sprinter specialising in the 400 metres. She competed at the 2024 Summer Olympics as a 400 metres runner and as a member of the Belgian women's 4x400 metres and mixed 4x400 metres relay teams. She also participated at multiple World and European Athletics championships, indoor and outdoor, individually and as a member of the 4x400 metres relay teams. She was national champion in the women's 400 metres in 2023.
Eveline Saalberg is a Dutch sprinter who specialises in the 400 metres.
Minke Bisschops is a Dutch track and field athlete who competes as a sprinter. She won a bronze in the women's 4 x 100 metres relay at the 2024 European Athletics Championships.
Isaya Klein Ikkink is a Dutch track and field athlete who competes in sprinting. He specializes in the 400 metres, where he has a personal best time of 45.41 seconds from 2024.
Raphael Bouju is a Dutch track and field athlete who competes as a sprinter. A successful junior, he has won senior national Dutch titles over 60m and 100m.
Elvis Afrifa is a Dutch sprinter who represents the Netherlands at international competitions.
Cathelijn Peeters is a Dutch track and field athlete who competes in hurdling and sprinting and previously competed in the combined events and hammer throw. Peeters specializes in the 400 metres hurdles and in the 400 metres. In the 4 × 400 metres relay, she is the 2023 World Champion and the 2024 World Indoor Champion with the Dutch women's team and the 2024 Olympic Champion with the Dutch mixed team.
Anne van de Wiel is a Dutch multi-event athlete. She won Dutch heptathlon national titles in 2019 and 2020.
