| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS | ms* |
|---|---|---|---|---|---|---|---|
| 1 | 1 | 2 | 2749 | Ezekiel NATHANIEL |
NGR |
47.47 Q | |
| 2 | 2 | 2 | 2835 | Ismail Doudai ABAKAR |
QAT |
47.61 Q PB | |
| 3 | 1 | 1 | 2845 | Abderrahman SAMBA |
QAT |
47.63 Q | |
| 4 | 2 | 1 | 2769 | Karsten WARHOLM |
NOR |
47.72 Q | |
| 5 | 3 | 1 | 2397 | Emil AGYEKUM |
GER |
47.83 q PB | |
| 6 | 3 | 2 | 2989 | Caleb DEAN |
USA |
47.85 q | |
| 7 | 1 | 3 | 2977 | Rai BENJAMIN |
USA |
47.95 Q | |
| 8 | 4 | 2 | 2557 | Malik JAMES-KING |
JAM |
48.01 SB | |
| 9 | 2 | 3 | 2121 | Alison DOS SANTOS |
BRA |
48.16 Q | .151 |
| 10 | 5 | 2 | 2127 | Matheus LIMA |
BRA |
48.16 | .154 |
| 11 | 4 | 1 | 2371 | Tyri DONOVAN |
GBR |
48.21 PB | |
| 12 | 3 | 3 | 2842 | Bassem HEMEIDA |
QAT |
48.29 PB | |
| 13 | 4 | 3 | 2551 | Roshawn CLARKE |
JAM |
48.37 | |
| 14 | 5 | 1 | 2892 | Matic Ian GUÄŒEK |
SLO |
48.51 | |
| 15 | 6 | 2 | 2650 | Wiseman Were MUKHOBE |
KEN |
48.65 | |
| 16 | 7 | 2 | 2915 | Oskar EDLUND |
SWE |
48.81 | |
| 17 | 6 | 1 | 2120 | Francisco Guilherme DOS REIS VIANA |
BRA |
49.01 | |
| 18 | 5 | 3 | 2936 | Berke AKÇAM |
TUR |
49.10 | |
| 19 | 8 | 2 | 2276 | Jesús David DELGADO |
ESP |
49.41 | |
| 20 | 6 | 3 | 2365 | Alastair CHALMERS |
GBR |
49.49 | |
| 21 | 7 | 3 | 2223 | Gerald DRUMMOND |
CRC |
49.58 | |
| 22 | 8 | 3 | 2110 | Victor NTWENG |
BOT |
49.61 | |
| 1 | 3031 | Chris ROBINSON |
USA |
DNF | |||
| 1 | 2114 | Kemorena TISANG |
BOT |
DQ |
ms - Milliseconds - shown when two or more competitors finish with the same time down to hundredths of a second