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.
The distance medley relay (DMR) is an athletic event in which four athletes compete as part of a relay. With its inclusion in the IAAF World Relays program, the IAAF announced on May 1, 2015 that the event would be an official world record event.
The NCAA Division I Men's Outdoor Track and Field Championship is an annual collegiate outdoor track and field competition for men organised by the National Collegiate Athletic Association (NCAA). Athlete's individual performances earn points for their institution and the team with the most points receives the NCAA team title in track and field. A separate NCAA Division I women's competition is also held. These two events are separate from the NCAA Division I Men's Indoor Track and Field Championships and NCAA Division I Women's Indoor Track and Field Championships held during the winter.
The NCAA Division I Women's Outdoor Track and Field Championships are the annual collegiate track and field competitions for women athletes representing Division I institutions organised by the National Collegiate Athletic Association (NCAA). Athletes' performances in individual championships earn points for their institutions and the team with the most points receives the NCAA team title in track and field. A separate NCAA Division I men's competition is also held. These two events are separate from the NCAA Division I Women's Indoor Track and Field Championships and NCAA Division I Men's Indoor Track and Field Championships held during the winter. The first edition of the championship was held in 1982.
The NCAA Women's Division I Indoor Track and Field Championship is an annual collegiate indoor track and field competition for women from Division I institutions organised by the National Collegiate Athletic Association. Athletes' performances in individual championships earn points for their institutions and the team with the most points receives the NCAA team title in track and field. A separate NCAA Division I men's competition is also held. These two events are separate from the NCAA Women's Division I Outdoor Track and Field Championships and NCAA Men's Division I Outdoor Track and Field Championships held during the spring. The first edition of the championship was held in 1983. The current team champions are the Florida Gators. The LSU Lady Tigers hold the record for most team titles with 11.
The NCAA Women's Division III indoor track and field championships are contested at the annual collegiate indoor track and field competition for women from Division III institutions organised by the National Collegiate Athletic Association. Athletes' performances in individual championships earn points for their institutions and the team with the most points receives the NCAA team title in track and field. A separate NCAA Division III men's competition is also held. These two events are separate from the NCAA Women's Division III Outdoor Track and Field Championships and NCAA Men's Division III Outdoor Track and Field Championships held during the spring. The first edition of the championship was held in 1983.
The NCAA Men's Division III Indoor Track and Field Championship is an annual collegiate indoor track and field competition for men organised by the National Collegiate Athletic Association. Athlete's individual performances earn points for their institution and the team with the most points receives the NCAA team title in track and field.
The 2014 NCAA Division I Indoor Track and Field Championships was the 50th NCAA Men's Division I Indoor Track and Field Championships and the 33rd NCAA Women's Division I Indoor Track and Field Championships, held at the Albuquerque Convention Center in Albuquerque, New Mexico near the campus of the host school, the University of New Mexico. In total, thirty-two different men's and women's indoor track and field events were contested from March 14 to March 15, 2014.
Ronnie Ash is an American track and field athlete specializing in hurdles. With his 12.99 (+1.2) 110 metres hurdles on June 29, 2014 in a semi-final round of the USA Outdoor Track and Field Championships in Sacramento, California, he moved into the prestigious sub 13 club and is currently the 17th fastest hurdler in history.
Rai Benjamin is an American professional hurdler and sprinter specializing in the 400 m and 400 m hurdles. He is the second fastest man in history in the 400 m hurdles with a personal best time of 46.17 s. Benjamin won silver medals at his first Olympic Games in 2021 and at the World Championships in 2019 and 2022 in the men's 400 m hurdles, and gold medals in the 4 × 400 m relay in 2019 and 2021.
2024 NCAA Division I Indoor Track and Field Championships 
