| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS |
|---|---|---|---|---|---|---|
| 1 | 1 | 1 | 173 | Karabo SIBANDA |
BOT |
45.15 Q PB |
| 2 | 1 | 3 | 589 | Geoffrey Kiprotich |
KEN |
45.38 Q PB |
| 3 | 2 | 3 | 899 | Wilbert LONDON |
USA |
45.49 Q |
| 4 | 1 | 2 | 748 | Abdalelah Haroun |
QAT |
45.55 Q |
| 5 | 2 | 1 | 904 | Kahmari MONTGOMERY |
USA |
45.71 Q |
| 6 | 3 | 1 | 236 | Anthony José ZAMBRANO |
COL |
45.81 q PB |
| 7 | 4 | 1 | 570 | Naoki Kitadani |
JPN |
46.41 q PB |
| 8 | 3 | 3 | 365 | Cameron CHALMERS |
GBR |
46.51 PB |
| 9 | 4 | 3 | 541 | Christopher TAYLOR |
JAM |
46.60 |
| 10 | 5 | 1 | 208 | Jamal Walton |
CAY |
46.61 |
| 11 | 2 | 2 | 571 | Kazuki Matsukiyo |
JPN |
46.69 Q PB |
| 12 | 5 | 3 | 223 | Yu Ang WU |
CHN |
46.83 |
| 13 | 3 | 2 | 654 | Iván Núñez |
MEX |
47.00 |
| 14 | 6 | 1 | 531 | Sean BAILEY |
JAM |
47.09 |
| 15 | 6 | 3 | 715 | Tymoteusz ZIMNY |
POL |
47.14 PB |
| 16 | 4 | 2 | 658 | Jochem DOBBER |
NED |
47.22 |
| 17 | 7 | 1 | 492 | Taha Hussein YASEEN |
IRQ |
47.26 |
| 18 | 5 | 2 | 265 | Luis Charles |
DOM |
47.33 |
| 19 | 8 | 1 | 499 | Vladimir ACETI |
ITA |
47.41 |
| 20 | 7 | 3 | 193 | Myles Banfield |
CAN |
47.46 |
| 21 | 6 | 2 | 588 | Edwin Ngeeti |
KEN |
47.51 |
| 22 | 8 | 3 | 237 | David Å alamon |
CRO |
47.51 PB |
| 2 | 171 | Baboloki THEBE |
BOT |
DQ R163.3(a) | ||
| 2 | 191 | Musa ISAH |
BRN |
DNS |