| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | USA | United States |
USA
|
42.51 Q WL | 0.152 |
| 2 | BRA | Brazil |
BRA
|
43.07 Q SB | 0.187 |
| 3 | JPN | Japan |
JPN
|
44.24 SB | 0.131 |
| 4 | UKR | Ukraine |
UKR
|
44.55 SB | 0.137 |
| TTO | Trinidad and Tobago |
TTO
|
DQ | 0.178 | |
| CHN | PR of China |
CHN
|
DQ | 0.170 | |
| POL | Poland |
POL
|
DNF | 0.159 | |
| RSA | South Africa |
RSA
|
DNF | 0.162 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | DEN | Denmark |
DEN
|
43.90 Q NR | 0.145 |
| 2 | GHA | Ghana |
GHA
|
44.12 Q SB | 0.135 |
| 3 | THA | Thailand |
THA
|
44.24 | 0.169 |
| 4 | NGR | Nigeria |
NGR
|
45.07 SB | 0.171 |
| CAN | Canada |
CAN
|
DQ | 0.159 | |
| FRA | France |
FRA
|
DNF | 0.148 | |
| GBR | Great Britain & NI |
GBR
|
DNF | 0.148 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | GER | Germany |
GER
|
43.03 Q SB | 0.211 |
| 2 | JAM | Jamaica |
JAM
|
43.08 Q SB | 0.145 |
| 3 | AUS | Australia |
AUS
|
43.19 q SB | 0.152 |
| 4 | ITA | Italy |
ITA
|
43.40 q SB | 0.143 |
| 5 | KAZ | Kazakhstan |
KAZ
|
43.71 | 0.158 |
| 6 | IRL | Ireland |
IRL
|
44.02 SB | 0.137 |
| 7 | CZE | Czech Republic |
CZE
|
44.67 SB | 0.148 |
| 8 | ECU | Ecuador |
ECU
|
44.74 SB | 0.198 |