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.Medalists
Records
Prior to the competition, the established records were as follows.
Schedule
Results
Heats
Qualification: First 3 in each heat and the next 3 fastest advance to the [|semifinals].
Rank | Heat | Name | Nationality | Time | Notes |
| 1 | Chris Brown | | 44.50 | Q, SB |
| 4 | LaShawn Merritt | | 44.78 | Q |
| 1 | John Steffensen | | 44.82 | Q, SB |
| 1 | Arismendy Peguero | | 44.92 | Q, PB |
| 4 | Johan Wissman | | 44.94 | Q, NR |
| 3 | Alleyne Francique | | 44.95 | Q, SB |
| 6 | Nery Brenes | | 45.01 | Q, NR |
| 2 | Jeremy Wariner | | 45.10 | Q |
| 6 | Angelo Taylor | | 45.13 | Q |
10 | 7 | Tyler Christopher | | 45.15 | Q |
11 | 3 | Leslie Djhone | | 45.17 | Q |
12 | 5 | Gary Kikaya | | 45.21 | Q |
13 | 7 | Ato Modibo | | 45.22 | Q, SB |
14 | 2 | Avard Moncur | | 45.27 | Q |
15 | 5 | Sanjay Ayre | | 45.28 | Q |
16 | 6 | William Collazo | | 45.29 | Q, PB |
17 | 4 | Andrae Williams | | 45.31 | Q |
18 | 3 | Ricardo Chambers | | 45.34 | Q |
19 | 2 | David Gillick | | 45.35 | Q |
20 | 6 | California Molefe | | 45.36 | q, SB |
21 | 7 | Sean Wroe | | 45.39 | Q |
22 | 4 | Young Talkmore Nyongani | | 45.40 | q, SB |
23 | 5 | Timothy Benjamin | | 45.44 | Q |
23 | 6 | Michael Blackwood | | 45.44 | q |
23 | 1 | Bastian Swillims | | 45.44 | PB |
26 | 5 | Chris Lloyd | | 45.46 | |
27 | 2 | Martyn Rooney | | 45.47 | SB |
28 | 2 | Lewis Banda | | 45.47 | SB |
29 | 7 | Daniel Dąbrowski | | 45.50 | |
30 | 3 | Andrew Steele | | 45.54 | |
31 | 5 | Vladislav Frolov | | 45.69 | |
32 | 1 | Renny Quow | | 45.70 | |
33 | 7 | Andrea Barberi | | 45.74 | SB |
34 | 1 | Marcin Marciniszyn | | 45.83 | |
35 | 3 | Rafał Wieruszewski | | 45.94 | SB |
36 | 3 | Carlos Santa | | 45.99 | SB |
37 | 2 | Brice Panel | | 46.02 | |
38 | 3 | Clemens Zeller | | 46.06 | |
39 | 1 | Dimitrios Regas | | 46.22 | SB |
40 | 6 | Yuki Yamaguchi | | 46.28 | |
41 | 4 | Eric Milazar | | 46.55 | |
42 | 5 | Ioan Vieru | | 46.78 | |
43 | 4 | Andrés Silva | | 46.79 | |
44 | 2 | Félix Martínez | | 46.86 | |
45 | 1 | Takeshi Fujiwara | | 46.92 | NR |
46 | 7 | Dimitrios Gravalos | | 46.94 | |
47 | 5 | Mathieu Gnanligo | | 47.51 | |
48 | 6 | Jonathon Lavers | | 47.97 | NR |
49 | 6 | Ivano Bucci | | 48.07 | PB |
50 | 5 | Nicolau Palanca | | 48.60 | |
51 | 4 | Dalibor Spasovski | | 48.63 | PB |
52 | 7 | Moses Kamut | | 48.90 | |
53 | 4 | Karar A.M. Al Abbody | | 48.95 | PB |
54 | 2 | Abdulla Mohamed Hussein | | 50.54 | PB |
55 | 2 | Hermán López | | 50.72 | |
| 3 | Yuzo Kanemaru | | | DNF |
| 6 | Nagmeldin Ali Abubakr | | | DNF |
| 7 | Lionel Larry | | | DNF |
| 4 | Gakologelwang Masheto | | | DNS |
| 5 | Hamdan Al-Bishi | | | DNS |
Semifinals
First 2 in each semifinal and the next 2 fastest advance to the [|final].
Rank | Heat | Name | Nationality | Time | Notes |
| 3 | LaShawn Merritt | | 44.31 | Q |
| 2 | Jeremy Wariner | | 44.33 | Q |
| 1 | Angelo Taylor | | 44.45 | Q |
| 3 | Leslie Djhone | | 44.46 | Q, NR |
| 3 | Tyler Christopher | | 44.47 | q, SB |
| 2 | Chris Brown | | 44.50 | Q |
| 1 | Johan Wissman | | 44.56 | Q, NR |
| 1 | Avard Moncur | | 44.86 | q, SB |
| 3 | John Steffensen | | 44.95 | |
10 | 2 | Ato Modibo | | 45.12 | SB |
11 | 1 | Nery Brenes | | 45.14 | |
11 | 2 | Gary Kikaya | | 45.14 | |
13 | 2 | Ricardo Chambers | | 45.18 | |
14 | 1 | Sean Wroe | | 45.25 | PB |
15 | 2 | David Gillick | | 45.37 | |
16 | 3 | Andrae Williams | | 45.40 | |
17 | 1 | Alleyne Francique | | 45.41 | |
18 | 2 | California Molefe | | 45.47 | |
19 | 1 | Arismendy Peguero | | 45.54 | |
19 | 2 | William Collazo | | 45.54 | |
21 | 1 | Michael Blackwood | | 45.60 | |
22 | 3 | Timothy Benjamin | | 46.17 | |
23 | 3 | Young Talkmore Nyongani | | 46.23 | |
| 3 | Sanjay Ayre | | | DNF |
Final
Rank | Name | Nationality | Time | Notes |
| Jeremy Wariner | | 43.45 | WL |
| LaShawn Merritt | | 43.96 | PB |
| Angelo Taylor | | 44.32 | |
4 | Chris Brown | | 44.45 | NR |
5 | Leslie Djhone | | 44.59 | |
6 | Tyler Christopher | | 44.71 | |
7 | Johan Wissman | | 44.72 | |
8 | Avard Moncur | | 45.40 | |