| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS | ms* |
|---|---|---|---|---|---|---|---|
| 1 | 1 | 1 | USA | United States |
USA |
37.49 OQ WL | |
| 2 | 1 | 4 | JPN | Japan |
JPN |
38.10 OQ SB | |
| 3 | 1 | 3 | CAN | Canada |
CAN |
38.11 OQ SB | |
| 4 | 2 | 1 | ITA | Italy |
ITA |
38.14 OQ SB | |
| 5 | 2 | 4 | CHN | PR of China |
CHN |
38.25 OQ SB | |
| 6 | 1 | 2 | FRA | France |
FRA |
38.32 OQ SB | |
| 7 | 2 | 2 | GBR | Great Britain & NI |
GBR |
38.36 OQ SB | |
| 8 | 3 | 2 | TTO | Trinidad and Tobago |
TTO |
38.46 SB | |
| 9 | 4 | 2 | NGR | Nigeria |
NGR |
38.47 | |
| 10 | 2 | 3 | JAM | Jamaica |
JAM |
38.50 OQ SB | .492 |
| 11 | 3 | 3 | AUS | Australia |
AUS |
38.50 | .496 |
| 12 | 5 | 2 | SUI | Switzerland |
SUI |
38.55 SB | |
| 13 | 3 | 1 | BRA | Brazil |
BRA |
38.79 SB | |
| 14 | 3 | 4 | RSA | South Africa |
RSA |
38.83 SB | |
| 15 | 4 | 3 | THA | Thailand |
THA |
38.87 | .861 |
| 16 | 5 | 3 | NED | Netherlands |
NED |
38.87 | .867 |
| 16 | 6 | 2 | POL | Poland |
POL |
38.87 SB | .867 |
| 18 | 4 | 4 | CUB | Cuba |
CUB |
39.00 | |
| 19 | 4 | 1 | LBR | Liberia |
LBR |
39.07 | |
| 20 | 5 | 4 | DOM | Dominican Republic |
DOM |
39.08 =SB | |
| 21 | 6 | 4 | KSA | Saudi Arabia |
KSA |
39.18 =SB | |
| 22 | 7 | 4 | COL | Colombia |
COL |
39.20 | |
| 23 | 5 | 1 | KOR | Korea |
KOR |
39.25 SB | |
| 24 | 6 | 1 | BAH | Bahamas |
BAH |
39.27 SB | |
| 25 | 7 | 1 | CZE | Czech Republic |
CZE |
39.31 SB | |
| 26 | 7 | 2 | ESP | Spain |
ESP |
39.35 SB | |
| 27 | 8 | 4 | KEN | Kenya |
KEN |
39.38 | |
| 28 | 6 | 3 | DEN | Denmark |
DEN |
39.82 | |
| 29 | 8 | 2 | TUR | Türkiye |
TUR |
40.04 SB | |
| 3 | GER | Germany |
GER |
DNF | |||
| 3 | BEL | Belgium |
BEL |
DQ | |||
| 1 | GHA | Ghana |
GHA |
DQ |
ms - Milliseconds - shown when two or more competitors finish with the same time down to hundredths of a second