Pos | Rank | Heat | Bib | Athlete | Mark | Details | Reaction Time | |
|---|---|---|---|---|---|---|---|---|
1 | 1 | 3 | 1648 | JAM | 45.49 PB | Q | 0.185 | |
2 | 1 | 1 | 1852 | RSA | 45.61 SB | Q | 0.171 | |
3 | 2 | 3 | 1986 | USA | 45.67 | Q | 0.147 | |
4 | 1 | 2 | 1270 | BOT | 45.91 | Q | 0.229 | |
5 | 2 | 1 | 1659 | JAM | 45.96 PB | Q | 0.231 | |
6 | 2 | 2 | 1924 | THA | 46.13 NU20R | Q | 0.230 | |
7 | 3 | 1 | 1299 | BRN | 46.21 | q | 0.164 | |
8 | 4 | 1 | 1314 | CAN | 46.22 PB | q | 0.191 | |
9 | 3 | 3 | 1319 | CAN | 46.27 PB | 0.206 | ||
10 | 3 | 2 | 1995 | USA | 46.50 | 0.234 | ||
11 | 5 | 1 | 1772 | NOR | 46.54 | 0.202 | ||
12 | 4 | 3 | 1682 | JPN | 46.62 | 0.152 | ||
13 | 4 | 2 | 1369 | CZE | 46.63 | 0.172 | ||
14 | 5 | 2 | 1326 | CHI | 46.69 PB | 0.177 | ||
15 | 6 | 2 | 1411 | ESP | 46.81 | 0.194 | ||
16 | 6 | 1 | 1408 | ESP | 46.88 | 0.168 | ||
17 | 7 | 2 | 1241 | AUS | 46.94 PB | 0.147 | ||
18 | 5 | 3 | 1293 | BRA | 47.00 | 0.150 | ||
19 | 6 | 3 | 1350 | CRO | 47.51 | 0.139 | ||
20 | 7 | 1 | 1717 | LTU | 47.55 | 0.187 | ||
21 | 7 | 3 | 1859 | RSA | 47.69 | 0.216 | ||
22 | 8 | 1 | 1663 | JPN | 47.97 | 0.179 | ||
23 | 8 | 2 | 1689 | KEN | 48.03 | 0.224 | ||
24 | 8 | 3 | 1515 | GER | 48.10 | 0.244 |