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 men's 400 metres hurdles was an event at the 1996 Summer Olympics in Atlanta, Georgia. There were 55 competitors from 35 nations. The maximum number of athletes per nation had been set at 3 since the 1930 Olympic Congress. The event was won by Derrick Adkins of the United States, the nation's fourth consecutive and 16th overall victory in the event. Samuel Matete of Zambia earned that nation's first medal in the event with his silver. American Calvin Davis took bronze.
The men's 400 metres hurdles was an event at the 1992 Summer Olympics in Barcelona, Spain. It was held from 3 to 6 August at the Estadi Olímpic Lluís Companys. There were 47 competitors from 35 nations. The maximum number of athletes per nation had been set at 3 since the 1930 Olympic Congress. The event was won by Kevin Young of the United States, the nation's third consecutive and 15th overall victory in the event. Winthrop Graham earned Jamaica's first men's 400 metres hurdles medal with his silver. Kriss Akabusi earned bronze, putting Great Britain on the podium in the event for the first time since 1980. The three medalists had finished in the same order in 1988, just outside of the medals that year in fourth through sixth places.
These are the official results of the Men's 400 metres event at the 1991 IAAF World Championships in Tokyo, Japan. There were a total of 46 participating athletes, with six qualifying heats and the final held on Thursday August 29, 1991.
These are the official results of the Women's 400 metres event at the 1991 IAAF World Championships in Tokyo, Japan. There were a total of 37 participating athletes, with five qualifying heats and the final held on Tuesday 27 August 1991.
The men's 400 metres was an event at the 1992 Summer Olympics in Barcelona, Spain. There were a total number of 68 participating athletes from 52 nations, with nine qualifying heats. The maximum number of athletes per nation had been set at 3 since the 1930 Olympic Congress. The event was won by Quincy Watts of the United States, the third in what would ultimately be seven consecutive American victories stretching from 1984 to 2008 and the 15th overall title in the event by the United States. Steve Lewis became the third man to win a second medal in the event. Samson Kitur earned Kenya's first medal in the men's 400 metres since 1972.
The men's 200 metres was an event at the 1992 Summer Olympics in Barcelona, Spain. There were 79 participating athletes from 65 nations, with eleven qualifying heats. The maximum number of athletes per nation had been set at 3 since the 1930 Olympic Congress. The event was won by Michael Marsh of the United States, the nation's third consecutive and 15th overall victory in the event. The Americans would take a second medal for the third consecutive Games as well, this time with Michael Bates earning bronze. The silver medal went to Frankie Fredericks, taking Namibia's first medal in the men's 200 metres.
These are the official results of the men's 4 × 400 metres relay event at the 1992 Summer Olympics in Barcelona, Spain. There were a total number of 24 nations competing, with three qualifying heats.
These are the official results of the women's 400 metres event at the 1992 Summer Olympics in Barcelona, Spain. There were a total number of 41 participating athletes, with six qualifying heats. The finals were held on July 25.
These are the official results of the Women's 400 metres event at the 1993 IAAF World Championships in Stuttgart, Germany. There were a total of 37 participating athletes, with five qualifying heats and the final held on Tuesday 1993-08-17.
These are the official results of the Men's 400 metres Hurdles event at the 1993 IAAF World Championships in Stuttgart, Germany. There were a total of 49 participating athletes, with seven qualifying heats, three semi-finals and the final held on Thursday 1993-08-19.
These are the official results of the Men's 4 × 400 metres event at the 1993 IAAF World Championships in Stuttgart, Germany. There were a total number of eighteen participating nations, with three qualifying heats and the final held on Sunday, August 22, 1993. The current world record for the event was set in the final.
These are the official results of the Men's 400 metres Hurdles event at the 1995 IAAF World Championships in Gothenburg, Sweden. There were a total number of 54 participating athletes, with seven qualifying heats, two semi-finals and the final held on Thursday 1995-08-10.
These are the official results of the Men's 400 metres Hurdles event at the 1997 IAAF World Championships in Athens, Greece. There were a total number of 51 participating athletes, with seven qualifying heats, three semi-finals and the final held on Monday 4 August 1997.
The finals and the qualifying heats of the Men's 400 metres Freestyle event at the 1993 FINA Short Course World Championships were held on the first day of the competition, on 2 December 1993 in Palma de Mallorca, Spain.
These are the official results of the Men's 400 metres Individual Medley event at the 1993 FINA Short Course World Championships held in Palma de Mallorca, Spain.
These are the official results of the Men's 4 × 400 metre relay event at the 1980 Summer Olympics in Moscow, USSR. There were a total number of 24 nations competing. The top two in each heat and next two fastest advanced to the final.
Simon Kemboi is a retired sprinter from Kenya. He specialised in 400 metres. He is a World Championships and African Championships medalist, and competed at the Olympics.
Slobodan Branković is a Serbian former track and field athlete who specialised in the 400 metres. He is currently the general secretary of the Athletics Federation of Serbia.
Davide Re is an Italian male 400 metre runner, two times gold medallist at the 2018 Mediterranean Games. He competed at the 2020 Summer Olympics, in 400 m.
