| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS |
|---|---|---|---|---|---|---|
| 1 | 1 | 1 | ITA | Italy |
ITA |
42.60 OQ SB |
| 2 | 2 | 1 | CIV | Côte d’Ivoire |
CIV |
42.63 OQ SB |
| 3 | 1 | 3 | NGR | Nigeria |
NGR |
42.71 OQ SB |
| 4 | 1 | 2 | JAM | Jamaica |
JAM |
42.74 OQ SB |
| 5 | 2 | 3 | SUI | Switzerland |
SUI |
42.75 OQ SB |
| 6 | 3 | 1 | ESP | Spain |
ESP |
42.88 |
| 7 | 3 | 3 | CHN | PR of China |
CHN |
43.13 |
| 8 | 4 | 1 | BEL | Belgium |
BEL |
43.17 SB |
| 9 | 4 | 3 | BAH | Bahamas |
BAH |
43.32 |
| 10 | 5 | 1 | ECU | Ecuador |
ECU |
43.47 NR |
| 11 | 5 | 3 | BRA | Brazil |
BRA |
43.51 SB |
| 12 | 2 | 2 | TTO | Trinidad and Tobago |
TTO |
43.54 OQ |
| 13 | 6 | 1 | JPN | Japan |
JPN |
43.63 SB |
| 14 | 6 | 3 | COL | Colombia |
COL |
43.92 SB |
| 15 | 3 | 2 | HUN | Hungary |
HUN |
44.04 |
| 16 | 4 | 2 | CUB | Cuba |
CUB |
44.05 SB |
| 17 | 5 | 2 | LBR | Liberia |
LBR |
44.31 |
| 18 | 6 | 2 | CHI | Chile |
CHI |
44.40 |
| 19 | 7 | 2 | DEN | Denmark |
DEN |
44.88 SB |
| 20 | 7 | 3 | EST | Estonia |
EST |
45.56 |
| 1 | AUT | Austria |
AUT |
DNF | ||
| 3 | DOM | Dominican Republic |
DOM |
DNS |