Pos | Rank | Heat | Bib | Athlete | Mark | Details | Reaction Time | |
|---|---|---|---|---|---|---|---|---|
1 | 1 | 3 | 555 | RSA | 49.43 | Q | 0.171 | |
2 | 2 | 3 | 294 | GBR | 50.11 NU20R | Q | 0.174 | |
3 | 3 | 3 | 428 | JAM | 50.13 PB | q | 0.169 | |
4 | 1 | 2 | 427 | JAM | 50.34 | Q | 0.176 | |
5 | 4 | 3 | 400 | ITA | 50.73 SB | q | 0.155 | |
6 | 5 | 3 | 647 | USA | 50.86 | 0.172 | ||
7 | 1 | 1 | 175 | BRA | 50.90 | Q | 0.197 | |
8 | 2 | 2 | 379 | IRI | 50.98 NU20R | Q | 0.189 | |
9 | 3 | 2 | 306 | GBR | 50.99 | 0.282 | ||
10 | 4 | 2 | 144 | BAR | 51.02 SB | 0.205 | ||
11 | 2 | 1 | 540 | QAT | 51.14 | Q | 0.191 | |
12 | 5 | 2 | 439 | JPN | 51.21 | 0.178 | ||
13 | 6 | 2 | 554 | RSA | 51.26 | 0.169 | ||
14 | 3 | 1 | 655 | USA | 51.27 | 0.216 | ||
15 | 4 | 1 | 583 | SWE | 51.55 | 0.204 | ||
16 | 7 | 2 | 574 | SUI | 51.83 | 0.186 | ||
17 | 5 | 1 | 460 | KEN | 51.94 | 0.222 | ||
18 | 6 | 3 | 496 | NED | 51.99 | 0.180 | ||
19 | 7 | 3 | 229 | ESP | 52.18 | 0.187 | ||
20 | 6 | 1 | 336 | GRE | 52.38 | 0.164 | ||
21 | 7 | 1 | 349 | HAI | 54.45 | 0.197 | ||
22 | 8 | 3 | 143 | BAR | 54.58 | 0.162 | ||
1 | 488 | MAR | DQ | |||||
2 | 244 | ESP | DNS |