Pos | Bib | Country | Athlete | Mark | Details | Reaction Time |
|---|---|---|---|---|---|---|
1 | 1521 | USA | 48.55 | Q | 0.214 | |
2 | 1143 | POL | 48.63 SB | Q | 0.255 | |
3 | 1339 | SUI | 48.80 | Q | 0.139 | |
4 | 820 | JAM | 48.95 | 0.153 | ||
5 | 320 | CZE | 49.17 SB | 0.179 | ||
6 | 1553 | ZAM | 49.28 | 0.169 | ||
7 | 835 | JPN | 49.46 | 0.172 | ||
8 | 480 | FRA | 50.17 | 0.141 |