| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS |
|---|---|---|---|---|---|---|
| 1 | 1 | 1 | 156 | Pavel MASLÁK |
CZE |
45.79 Q |
| 2 | 2 | 1 | 390 | Kyle Clemons |
USA |
46.06 Q |
| 3 | 1 | 2 | 112 | Chris Brown |
BAH |
46.19 Q |
| 4 | 2 | 2 | 149 | Nery Brenes |
CRC |
46.25 Q SB |
| 5 | 3 | 1 | 370 | Lalonde Gordon |
TTO |
46.29 Q |
| 6 | 3 | 2 | 413 | David Verburg |
USA |
46.33 Q |
| 7 | 4 | 2 | 165 | Luguelín SANTOS |
DOM |
46.37 |
| 8 | 4 | 1 | 199 | Nigel Levine |
GBR |
46.84 |
| 9 | 5 | 2 | 314 | Rafał Omelko |
POL |
46.94 |
| 10 | 6 | 2 | 247 | Akheem Gauntlett |
JAM |
47.13 |
| 11 | 5 | 1 | 178 | Marek Niit |
EST |
47.67 |
| 1 | 248 | Edino Steele |
JAM |
DQ R163.3(b) |