| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS |
|---|---|---|---|---|---|---|
| 1 | 1 | 2 | USA | United States |
USA |
41.59 Q SB |
| 2 | 1 | 1 | JAM | Jamaica |
JAM |
41.70 Q SB |
| 3 | 2 | 2 | CIV | Côte d’Ivoire |
CIV |
41.90 Q AR |
| 4 | 3 | 2 | ITA | Italy |
ITA |
42.14 Q NR |
| 5 | 2 | 1 | GBR | Great Britain & NI |
GBR |
42.33 Q SB |
| 6 | 4 | 2 | NED | Netherlands |
NED |
42.53 q |
| 7 | 3 | 1 | SUI | Switzerland |
SUI |
42.64 Q SB |
| 8 | 5 | 2 | POL | Poland |
POL |
42.65 q SB |
| 9 | 4 | 1 | GER | Germany |
GER |
42.78 qR SB |
| 10 | 5 | 1 | TTO | Trinidad and Tobago |
TTO |
42.85 SB |
| 11 | 6 | 1 | ESP | Spain |
ESP |
42.96 SB |
| 12 | 7 | 1 | FRA | France |
FRA |
43.12 SB |
| 13 | 6 | 2 | CUB | Cuba |
CUB |
43.17 =SB |
| 14 | 7 | 2 | HUN | Hungary |
HUN |
43.38 NR |
| 15 | 8 | 2 | BRA | Brazil |
BRA |
43.46 SB |
| 2 | NGR | Nigeria |
NGR |
DNF | ||
| 1 | AUS | Australia |
AUS |
DNF |