Pos | Rank | Heat | Bib | Athlete | Mark | Details | Reaction Time | |
|---|---|---|---|---|---|---|---|---|
1 | 1 | 2 | 1757 | FIN | 49.36 WU20L | Q | 0.172 | |
2 | 2 | 2 | 1681 | CZE | 49.36 WU20L | Q | 0.163 | |
3 | 3 | 2 | 2340 | USA | 49.82 | q | 0.212 | |
4 | 1 | 1 | 2190 | RSA | 49.90 | Q | 0.161 | |
5 | 2 | 1 | 1790 | GBR | 50.00 NU20R | Q | 0.151 | |
6 | 4 | 2 | 1709 | ESP | 50.22 NU20R | q | 0.195 | |
7 | 3 | 1 | 1971 | JPN | 51.04 | 0.158 | ||
8 | 1 | 3 | 1966 | JAM | 51.11 | Q | 0.208 | |
9 | 2 | 3 | 1626 | CHI | 51.33 PB | Q | 0.179 | |
10 | 4 | 1 | 2222 | SRI | 51.45 | 0.185 | ||
11 | 5 | 2 | 1901 | IRL | 51.65 | 0.165 | ||
12 | 3 | 3 | 1967 | JPN | 51.80 | 0.283 | ||
13 | 6 | 2 | 1900 | IRL | 51.93 | 0.157 | ||
14 | 7 | 2 | 2014 | KSA | 52.25 PB | 0.175 | ||
15 | 5 | 1 | 2214 | SLO | 52.55 | 0.184 | ||
16 | 4 | 3 | 2059 | MEX | 52.57 | 0.137 | ||
17 | 5 | 3 | 1584 | BRA | 52.67 PB | 0.157 | ||
18 | 6 | 3 | 2360 | USA | 52.76 | 0.239 | ||
19 | 7 | 3 | 2283 | TTO | 53.09 | 0.159 | ||
20 | 6 | 1 | 1914 | ITA | 53.92 | 0.163 | ||
21 | 8 | 2 | 1963 | JAM | 54.24 | 0.171 | ||
22 | 7 | 1 | 2065 | MEX | 57.96 | 0.142 | ||
23 | 8 | 3 | 1637 | CHN | 1:03.89 | 0.196 | ||
1 | 1698 | DEN | DNS |