| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS |
|---|---|---|---|---|---|---|
| 1 | 1 | 2 | 311 | Anthony COX |
JAM |
46.86 Q |
| 2 | 1 | 3 | 148 | Bruno Silva |
BRA |
46.87 Q PB |
| 3 | 2 | 3 | 319 | Antonio WATSON |
JAM |
47.05 Q PB |
| 4 | 2 | 2 | 388 | Ivan Danny GELDENHUYS |
NAM |
47.24 Q PB |
| 5 | 3 | 3 | 448 | Gregor GRAHOVAC |
SLO |
47.34 q PB |
| 6 | 1 | 1 | 468 | Colby Jennings |
TKS |
47.36 Q PB |
| 7 | 2 | 1 | 226 | Melkamu Assefa |
ETH |
47.43 Q |
| 8 | 3 | 2 | 277 | Daniel WILLIAMS |
GUY |
47.46 q |
| 9 | 3 | 1 | 342 | Kelvin Sane TAUTA |
KEN |
47.55 |
| 10 | 4 | 2 | 340 | David Sanayek KAPIRANTE |
KEN |
47.66 |
| 11 | 4 | 3 | 500 | Yaroslav Demchenko |
UKR |
47.96 PB |
| 12 | 5 | 3 | 355 | Reuben Nichols |
LCA |
48.01 PB |
| 13 | 4 | 1 | 282 | Elvin Josué Canales |
HON |
48.21 |
| 14 | 5 | 2 | 133 | Mohammad Jahir RAYHAN |
BAN |
48.22 |
| 15 | 5 | 1 | 442 | Thiruben S/O Thana Rajan |
SGP |
48.40 |
| 16 | 6 | 1 | 154 | Musa ISAH |
BRN |
48.43 |
| 17 | 6 | 3 | 129 | Correy Sherrod |
BAH |
48.56 |
| 18 | 6 | 2 | 514 | José Álvarez |
VEN |
48.79 |
| 19 | 7 | 3 | 457 | Thiran Ravishka |
SRI |
48.89 |
| 20 | 7 | 1 | 179 | Bo Xu |
CHN |
48.90 |
| 21 | 7 | 2 | 161 | Hantao Deng |
CHN |
49.12 |
| 22 | 8 | 2 | 130 | Tyrell Simms |
BAH |
49.38 |
| 23 | 8 | 1 | 146 | Bernard Olesitse |
BOT |
50.54 |
| 3 | 398 | Antonio Grant |
PAN |
DQ |