Pos | Bib | Athlete | Mark | Details | Reaction Time | |
|---|---|---|---|---|---|---|
1 | 1481 | USA | 43.95 | Q | 0.143 | |
2 | 993 | MEX | 44.37 NR | Q | 0.128 | |
3 | 153 | BRA | 44.37 AR | Q | 0.186 | |
4 | 533 | GBR | 44.47 SB | Q | 0.210 | |
5 | 1454 | USA | 44.51 PB | 0.143 | ||
6 | 1141 | POL | 44.62 NR | 0.184 | ||
7 | 862 | KEN | 45.57 | 0.312 | ||
8 | 814 | JAM | 45.86 | 0.246 |