# 2007 World Championships in Athletics – Men's 400 metres

The men's 400 metres at the 2007 World Championships in Athletics was held at the Nagai Stadium on 28, 29 and 31 August. The winning margin was 0.51 seconds.

## Medalists

| Gold | Silver | Bronze |
| Jeremy Wariner United States | LaShawn Merritt United States | Angelo Taylor United States |

## Records

Prior to the competition, the established records were as follows.
| World record | Michael Johnson (USA) | 43.18 | Seville, Spain | 26 August 1999 |
| Championship record | Michael Johnson (USA) | 43.18 | Seville, Spain | 26 August 1999 |
| World Leading | Jeremy Wariner (USA) | 43.50 | Stockholm, Sweden | 7 August 2007 |
| African record | Gary Kikaya (COD) | 44.10 | Stuttgart, Germany | 9 September 2006 |
| Asian record | Mohamed Amer Al-Malky (OMA) | 44.56 | Budapest, Hungary | 12 August 1988 |
| North American record | Michael Johnson (USA) | 43.18 | Seville, Spain | 26 August 1999 |
| South American record | Sanderlei Parrela (BRA) | 44.29 | Seville, Spain | 26 August 1999 |
| European record | Thomas Schönlebe (GDR) | 44.33 | Rome, Italy | 3 September 1987 |
| Oceanian record | Darren Clark (AUS) | 44.38 | Seoul, South Korea | 26 September 1988 |

## Schedule

| Date | Time | Round |
| August 28, 2007 | 10:10 | Heats |
| August 29, 2007 | 21:25 | Semifinals |
| August 31, 2007 | 22:05 | Final |

## Results

| KEY: | q | Fastest non-qualifiers | Q | Qualified | WR | World record | AR | Area record | NR | National record | PB | Personal best | SB | Seasonal best |

### Heats

Qualification: First 3 in each heat (Q) and the next 3 fastest (q) advance to the semifinals.
| Rank | Heat | Name | Nationality | Time | Notes |
| 1 | 1 | Chris Brown | Bahamas | 44.50 | Q, SB |
| 2 | 4 | LaShawn Merritt | United States | 44.78 | Q |
| 3 | 1 | John Steffensen | Australia | 44.82 | Q, SB |
| 4 | 1 | Arismendy Peguero | Dominican Republic | 44.92 | Q, PB |
| 5 | 4 | Johan Wissman | Sweden | 44.94 | Q, NR |
| 6 | 3 | Alleyne Francique | Grenada | 44.95 | Q, SB |
| 7 | 6 | Nery Brenes | Costa Rica | 45.01 | Q, NR |
| 8 | 2 | Jeremy Wariner | United States | 45.10 | Q |
| 9 | 6 | Angelo Taylor | United States | 45.13 | Q |
| 10 | 7 | Tyler Christopher | Canada | 45.15 | Q |
| 11 | 3 | Leslie Djhone | France | 45.17 | Q |
| 12 | 5 | Gary Kikaya | Democratic Republic of the Congo | 45.21 | Q |
| 13 | 7 | Ato Modibo | Trinidad and Tobago | 45.22 | Q, SB |
| 14 | 2 | Avard Moncur | Bahamas | 45.27 | Q |
| 15 | 5 | Sanjay Ayre | Jamaica | 45.28 | Q |
| 16 | 6 | William Collazo | Cuba | 45.29 | Q, PB |
| 17 | 4 | Andrae Williams | Bahamas | 45.31 | Q |
| 18 | 3 | Ricardo Chambers | Jamaica | 45.34 | Q |
| 19 | 2 | David Gillick | Ireland | 45.35 | Q |
| 20 | 6 | California Molefe | Botswana | 45.36 | q, SB |
| 21 | 7 | Sean Wroe | Australia | 45.39 | Q |
| 22 | 4 | Young Talkmore Nyongani | Zimbabwe | 45.40 | q, SB |
| 23 | 5 | Timothy Benjamin | Great Britain | 45.44 | Q |
| 23 | 6 | Michael Blackwood | Jamaica | 45.44 | q |
| 23 | 1 | Bastian Swillims | Germany | 45.44 | PB |
| 26 | 5 | Chris Lloyd | Dominica | 45.46 | |
| 27 | 2 | Martyn Rooney | Great Britain | 45.47 | SB |
| 28 | 2 | Lewis Banda | Zimbabwe | 45.47 | SB |
| 29 | 7 | Daniel Dąbrowski | Poland | 45.50 | |
| 30 | 3 | Andrew Steele | Great Britain | 45.54 | |
| 31 | 5 | Vladislav Frolov | Russia | 45.69 | |
| 32 | 1 | Renny Quow | Trinidad and Tobago | 45.70 | |
| 33 | 7 | Andrea Barberi | Italy | 45.74 | SB |
| 34 | 1 | Marcin Marciniszyn | Poland | 45.83 | |
| 35 | 3 | Rafał Wieruszewski | Poland | 45.94 | SB |
| 36 | 3 | Carlos Santa | Dominican Republic | 45.99 | SB |
| 37 | 2 | Brice Panel | France | 46.02 | |
| 38 | 3 | Clemens Zeller | Austria | 46.06 | |
| 39 | 1 | Dimitrios Regas | Greece | 46.22 | SB |
| 40 | 6 | Yuki Yamaguchi | Japan | 46.28 | |
| 41 | 4 | Eric Milazar | Mauritius | 46.55 | |
| 42 | 5 | Ioan Vieru | Romania | 46.78 | |
| 43 | 4 | Andrés Silva | Uruguay | 46.79 | |
| 44 | 2 | Félix Martínez | Puerto Rico | 46.86 | |
| 45 | 1 | Takeshi Fujiwara | El Salvador | 46.92 | NR |
| 46 | 7 | Dimitrios Gravalos | Greece | 46.94 | |
| 47 | 5 | Mathieu Gnanligo | Benin | 47.51 | |
| 48 | 6 | Jonathon Lavers | Gibraltar | 47.97 | NR |
| 49 | 6 | Ivano Bucci | San Marino | 48.07 | PB |
| 50 | 5 | Nicolau Palanca | Angola | 48.60 | |
| 51 | 4 | Dalibor Spasovski | Macedonia | 48.63 | PB |
| 52 | 7 | Moses Kamut | Vanuatu | 48.90 | |
| 53 | 4 | Karar A.M. Al Abbody | Iraq | 48.95 | PB |
| 54 | 2 | Abdulla Mohamed Hussein | Somalia | 50.54 | PB |
| 55 | 2 | Hermán López | Nicaragua | 50.72 | |
| | 3 | Yuzo Kanemaru | Japan | | DNF |
| | 6 | Nagmeldin Ali Abubakr | Sudan | | DNF |
| | 7 | Lionel Larry | United States | | DNF |
| | 4 | Gakologelwang Masheto | Botswana | | DNS |
| | 5 | Hamdan Al-Bishi | Saudi Arabia | | DNS |

### Semifinals

First 2 in each semifinal (Q) and the next 2 fastest (q) advance to the final.
| Rank | Heat | Name | Nationality | Time | Notes |
| 1 | 3 | LaShawn Merritt | United States | 44.31 | Q |
| 2 | 2 | Jeremy Wariner | United States | 44.33 | Q |
| 3 | 1 | Angelo Taylor | United States | 44.45 | Q |
| 4 | 3 | Leslie Djhone | France | 44.46 | Q, NR |
| 5 | 3 | Tyler Christopher | Canada | 44.47 | q, SB |
| 6 | 2 | Chris Brown | Bahamas | 44.50 | Q |
| 7 | 1 | Johan Wissman | Sweden | 44.56 | Q, NR |
| 8 | 1 | Avard Moncur | Bahamas | 44.86 | q, SB |
| 9 | 3 | John Steffensen | Australia | 44.95 | |
| 10 | 2 | Ato Modibo | Trinidad and Tobago | 45.12 | SB |
| 11 | 1 | Nery Brenes | Costa Rica | 45.14 | |
| 11 | 2 | Gary Kikaya | Democratic Republic of the Congo | 45.14 | |
| 13 | 2 | Ricardo Chambers | Jamaica | 45.18 | |
| 14 | 1 | Sean Wroe | Australia | 45.25 | PB |
| 15 | 2 | David Gillick | Ireland | 45.37 | |
| 16 | 3 | Andrae Williams | Bahamas | 45.40 | |
| 17 | 1 | Alleyne Francique | Grenada | 45.41 | |
| 18 | 2 | California Molefe | Botswana | 45.47 | |
| 19 | 1 | Arismendy Peguero | Dominican Republic | 45.54 | |
| 19 | 2 | William Collazo | Cuba | 45.54 | |
| 21 | 1 | Michael Blackwood | Jamaica | 45.60 | |
| 22 | 3 | Timothy Benjamin | Great Britain | 46.17 | |
| 23 | 3 | Young Talkmore Nyongani | Zimbabwe | 46.23 | |
| | 3 | Sanjay Ayre | Jamaica | | DNF |

### Final

| Rank | Name | Nationality | Time | Notes |
| | Jeremy Wariner | United States | 43.45 | WL |
| | LaShawn Merritt | United States | 43.96 | PB |
| | Angelo Taylor | United States | 44.32 | |
| 4 | Chris Brown | Bahamas | 44.45 | NR |
| 5 | Leslie Djhone | France | 44.59 | |
| 6 | Tyler Christopher | Canada | 44.71 | |
| 7 | Johan Wissman | Sweden | 44.72 | |
| 8 | Avard Moncur | Bahamas | 45.40 | |