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.
Prior to the competition, the established records were as follows.
Date
Time
Round
August 28, 2007
10:10
Heats
August 29, 2007
21:25
Semifinals
August 31, 2007
22:05
Final
KEY:
q
Fastest non-qualifiers
Q
Qualified
WR
World record
AR
Area record
NR
National record
PB
Personal best
SB
Seasonal best
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
First 2 in each semifinal (Q ) and the next 2 fastest (q ) advance to the final .
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