| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS |
|---|---|---|---|---|---|---|
| 1 | 1 | 6 | 628 | Josephus LYLES |
USA |
46.26 Q |
| 2 | 1 | 2 | 140 | Anthony José ZAMBRANO |
COL |
46.27 Q PB |
| 3 | 2 | 2 | 358 | Christopher TAYLOR |
JAM |
46.30 Q |
| 4 | 2 | 6 | 243 | Loïc PREVOT |
FRA |
46.67 Q PB |
| 5 | 1 | 5 | 633 | Keshun Reed |
USA |
46.98 Q |
| 6 | 2 | 5 | 310 | Chandan Bauri |
IND |
47.15 Q |
| 7 | 1 | 4 | 23 | Louis Stenmark |
AUS |
47.17 Q |
| 8 | 3 | 2 | 374 | Manato Sasaki |
JPN |
47.27 Q |
| 9 | 1 | 3 | 91 | Jamal Walton |
CAY |
47.35 Q |
| 10 | 1 | 1 | 54 | Karabo SIBANDA |
BOT |
47.46 Q |
| 11 | 3 | 5 | 388 | Edwin Ngeeti |
KEN |
47.47 Q |
| 12 | 2 | 3 | 277 | Marvin SCHLEGEL |
GER |
47.57 Q |
| 13 | 4 | 5 | 114 | Haoran Xu |
CHN |
47.59 q PB |
| 14 | 3 | 3 | 365 | Ryota Kitahara |
JPN |
47.69 Q |
| 15 | 3 | 6 | 389 | Josphat Kipngetich Ngeno |
KEN |
47.72 Q |
| 16 | 4 | 2 | 441 | Roger Ordaz |
MEX |
47.74 q PB |
| 17 | 5 | 5 | 442 | Edgar RAMÍREZ |
MEX |
47.88 q PB |
| 18 | 4 | 6 | 330 | Vladimir ACETI |
ITA |
47.95 q |
| 19 | 2 | 1 | 112 | Yu Ang WU |
CHN |
48.02 Q |
| 20 | 6 | 5 | 265 | Florian Colon Marti |
GER |
48.07 q |
| 21 | 5 | 2 | 490 | Tymoteusz ZIMNY |
POL |
48.09 q PB |
| 22 | 3 | 1 | 558 | Miquel Shepper |
SUR |
48.30 Q PB |
| 23 | 4 | 1 | 349 | Anthony Carpenter |
JAM |
48.31 |
| 24 | 6 | 2 | 589 | Bayraktar Çalik |
TUR |
48.38 PB |
| 24 | 4 | 3 | 78 | Nathan Friginette |
CAN |
48.38 PB |
| 26 | 2 | 4 | 515 | André Nikolas Marich |
RSA |
48.41 Q |
| 27 | 3 | 4 | 543 | Anej Zupanc |
SLO |
48.44 Q PB |
| 28 | 7 | 5 | 503 | Florin-Paul Gaspar |
ROU |
48.45 PB |
| 29 | 5 | 6 | 413 | Austris Karpinskis |
LAT |
48.54 |
| 29 | 4 | 4 | 193 | Manuel GUIJARRO |
ESP |
48.54 |
| 29 | 7 | 2 | 572 | Ndzingeko Dlamini |
SWZ |
48.54 PB |
| 32 | 6 | 6 | 450 | Rudi Romario Pretorius |
NAM |
48.55 PB |
| 33 | 8 | 5 | 27 | Nico Garea |
AUT |
48.59 PB |
| 33 | 5 | 1 | 146 | Petar Melnjak |
CRO |
48.59 |
| 33 | 5 | 3 | 325 | Taha Hussein YASEEN |
IRQ |
48.59 |
| 36 | 5 | 4 | 52 | Kagiso Moyuthu |
BOT |
48.72 PB |
| 37 | 6 | 1 | 291 | Michail PAPPAS |
GRE |
48.85 |
| 38 | 7 | 1 | 125 | Andrés Hernández |
COL |
49.02 PB |
| 39 | 6 | 3 | 329 | Rodney Griffin |
ISV |
49.09 PB |
| 40 | 7 | 6 | 502 | Nicolae-Ciprian Daroczi |
ROU |
49.12 |
| 41 | 8 | 2 | 207 | Álvaro Sierra |
ESP |
49.30 |
| 42 | 6 | 4 | 210 | Kristjan Joosep |
EST |
49.34 |
| 43 | 7 | 3 | 42 | Michaiah Robinson |
BER |
49.49 |
| 44 | 7 | 4 | 70 | Michael Aono |
CAN |
50.18 |
| 45 | 8 | 6 | 422 | Wai Un Lou |
MAC |
51.75 PB |
| 46 | 8 | 1 | 174 | Sebastián Acuña |
ECU |
52.01 |
| 3 | 172 | Christopher Melenciano |
DOM |
DQ R163.3(a) | ||
| 4 | 171 | Luis Charles |
DOM |
DQ R163.3(a) |