| POS | Rank | Heat | ATHLETE | COUNTRY | RESULTS |
|---|---|---|---|---|---|
| 1 | 1 | 1 | United States |
USA |
42.96 Q |
| 2 | 1 | 2 | Germany |
GER |
43.04 Q SB |
| 3 | 2 | 2 | Jamaica |
JAM |
43.22 Q |
| 4 | 2 | 1 | PR of China |
CHN |
43.90 Q |
| 5 | 3 | 1 | Netherlands |
NED |
43.98 Q SB |
| 6 | 4 | 1 | Bahamas |
BAH |
44.11 q SB |
| 7 | 3 | 2 | France |
FRA |
44.14 Q SB |
| 8 | 4 | 2 | Brazil |
BRA |
44.20 q SB |
| 9 | 5 | 2 | Ecuador |
ECU |
44.54 SB |
| 10 | 5 | 1 | British Virgin Islands |
IVB |
44.78 |
| 11 | 6 | 2 | Nigeria |
NGR |
44.95 SB |
| 12 | 6 | 1 | Canada |
CAN |
44.98 SB |
| 1 | Trinidad and Tobago |
TTO |
DNF | ||
| 2 | Italy |
ITA |
DQ |