Pos | Bib | Athlete | Mark | Details | Reaction Time | |
|---|---|---|---|---|---|---|
1 | 1960 | USA | 52.68 | Q | 0.153 | |
2 | 1748 | IRL | 53.20 | Q | 0.190 | |
3 | 1932 | UGA | 53.55 | Q | 0.204 | |
4 | 1565 | CAN | 53.62 PB | Q | 0.152 | |
5 | 1582 | CHN | 54.33 SB | q | 0.174 | |
6 | 1597 | COL | 54.42 PB | q | 0.257 | |
7 | 1876 | RSA | 59.01 | 0.186 | ||
8 | 1826 | MDV | 59.76 NU20R | 0.182 |