Athletics at the 2000 Summer Olympics – Men's 400 metres
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| Athletics at the 2000 Summer Olympics | ||
|---|---|---|
 | ||
| Track events | ||
| 100 m | men | women |
| 200 m | men | women |
| 400 m | men | women |
| 800 m | men | women |
| 1500 m | men | women |
| 5000 m | men | women |
| 10,000 m | men | women |
| 100 m hurdles | women | |
| 110 m hurdles | men | |
| 400 m hurdles | men | women |
| 3000 m steeplechase | men | |
| 4 × 100 m relay | men | women |
| 4 × 400 m relay | men | women |
| Road events | ||
| Marathon | men | women |
| 20 km walk | men | women |
| 50 km walk | men | |
| Field events | ||
| Long jump | men | women |
| Triple jump | men | women |
| High jump | men | women |
| Pole vault | men | women |
| Shot put | men | women |
| Discus throw | men | women |
| Javelin throw | men | women |
| Hammer throw | men | women |
| Combined events | ||
| Heptathlon | women | |
| Decathlon | men | |
| Wheelchair races | ||
The 400 metres at the 2000 Summer Olympics as part of the athletics programme were held at Stadium Australia on Friday 22 September, Saturday 23 September, Sunday 24 September, and Monday 25 September 2000. The top three runners in each of the initial nine heats automatically qualified for the second round. The next five fastest runners from across the heats also qualified. Those 32 runners competed in 4 heats in the second round, with the top fours runners from each heat qualifying for the semifinals. There were two semifinals, and only the top four from each heat advanced to the final.
Records
| World Record | 43.17 | Michael Johnson | USA | Seville, ESP | 26 August, 1999 |
| Olympic Record | 43.49 | Michael Johnson | USA | Atlanta, USA | 29 July, 1996 |
Medals
| Gold: | Silver: | Bronze: |
 Michael Johnson, United States
|
Alvin Harrison, United States
|
 Gregory Haughton, Jamaica
|
Results
All times shown are in seconds.
- Q denotes qualification by place in heat.
- q denotes qualification by overall place.
- DNS denotes did not start.
- DNF denotes did not finish.
- DQ denotes disqualification.
- NR denotes national record.
- OR denotes Olympic record.
- WR denotes world record.
- PB denotes personal best.
- SB denotes season best.
Round 1
| Heat 1 of 9 Date: Friday 22 September 2000 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Place | Athlete | Nation | Lane | Reaction | Time | Qual. | Record | |
| Heat | Overall | |||||||
| 1 | 4 | Avard Moncur |  Bahamas
|
1 | 0.266 s | 45.23 s | Q | |
| 2 | 7 | Daniel Caines |  Great Britain
|
7 | 0.153 s | 45.39 s | Q | PB |
| 3 | 11 | Casey Vincent |  Australia
|
5 | 0.162 s | 45.49 s | Q | |
| 4 | 30 | Dmitriy Golovastov |  Russia
|
3 | 0.234 s | 45.90 s | q | |
| 5 | 40 | Takahiko Yamamura |  Japan
|
2 | 0.261 s | 46.25 s | ||
| 6 | 43 | Carlos Santa |  Dominican Republic
|
4 | 0.169 s | 46.40 s | ||
| 7 | 50 | Piotr Rysiukiewicz |  Poland
|
8 | 0.227 s | 46.67 s | ||
| 8 | 51 | Gerald Clervil |  Haiti
|
6 | 0.556 s | 46.69 s | NR | |
| Heat 2 of 9 Date: Friday 22 September 2000 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Place | Athlete | Nation | Lane | Reaction | Time | Qual. | Record | |
| Heat | Overall | |||||||
| 1 | =23 | Jude Monye |  Nigeria
|
8 | 0.220 s | 45.79 s | Q | |
| 2 | 26 | Patrick Dwyer | Australia
|
1 | 0.196 s | 45.82 s | Q | |
| 3 | 11 | Casey Vincent | Australia
|
5 | 0.162 s | 45.49 s | Q | |
| 4 | 30 | Dmitriy Golovastov | Russia
|
3 | 0.234 s | 45.90 s | q | |
| 5 | 40 | Takahiko Yamamura | Japan
|
2 | 0.261 s | 46.25 s | ||
| 6 | 43 | Carlos Santa | Dominican Republic
|
4 | 0.169 s | 46.40 s | ||
| 7 | 50 | Piotr Rysiukiewicz | Poland
|
8 | 0.227 s | 46.67 s | ||
| 8 | 51 | Gerald Clervil | Haiti
|
6 | 0.556 s | 46.69 s | NR | |