| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS | ms* |
|---|---|---|---|---|---|---|---|
| 1 | 1 | 2 | 2079 | Nashon PKIACH |
KEN |
1:45.82 Q PB | |
| 2 | 1 | 1 | 2362 | Shafeck MURUNGI |
UGA |
1:46.41 Q PB | |
| 3 | 2 | 1 | 2118 | Imad BOUCHAJDA |
MAR |
1:46.66 Q | .651 |
| 4 | 2 | 2 | 1760 | Alejandro RIOS |
ESP |
1:46.66 Q PB | .659 |
| 5 | 3 | 2 | 2268 | Benjamin LAKOŠELJAC |
SLO |
1:47.19 Q | |
| 6 | 1 | 3 | 2082 | Collins TAJEWOU |
KEN |
1:47.72 Q | |
| 7 | 3 | 1 | 1528 | Harry HALLEEN |
AUS |
1:48.17 Q PB | |
| 8 | 2 | 3 | 1549 | Daniel WILLIAMS |
AUS |
1:48.29 Q | |
| 9 | 4 | 1 | 1839 | Joshua MUNGIN |
GBR |
1:48.31 | |
| 10 | 4 | 2 | 1960 | Mogali VENKATRAM |
IND |
1:48.40 | |
| 11 | 5 | 1 | 2239 | Werner GOUWS |
RSA |
1:48.89 | |
| 12 | 3 | 3 | 1755 | Alejandro MUÑOZ |
ESP |
1:49.08 Q | |
| 13 | 4 | 3 | 1835 | Matthew MCKENNA |
GBR |
1:49.46 | .457 |
| 14 | 5 | 2 | 2028 | Joel MORGAN |
JAM |
1:49.46 PB | .459 |
| 15 | 5 | 3 | 2166 | Joe MARTIN |
NZL |
1:49.68 | |
| 16 | 6 | 2 | 2168 | Conall MCLEAN |
NZL |
1:49.96 | |
| 17 | 7 | 2 | 1984 | Valerio CIARAMELLA |
ITA |
1:50.28 | .271 |
| 18 | 6 | 1 | 2204 | Iwo URBANOWICZ |
POL |
1:50.28 | .275 |
| 19 | 8 | 2 | 2206 | Łukasz ZACZYK |
POL |
1:50.37 | |
| 20 | 6 | 3 | 2162 | Sondre SØGÅRD LEHMANN |
NOR |
1:50.39 | |
| 21 | 7 | 3 | 1773 | Negahe EYASU |
ETH |
1:50.86 | |
| 22 | 7 | 1 | 1876 | Jan Emanuel MERHEIM |
GER |
1:51.02 | .013 |
| 23 | 8 | 3 | 2235 | Emile ELS |
RSA |
1:51.02 | .020 |
| 24 | 9 | 3 | 2127 | Amado Kalid AMADOR |
MEX |
1:51.32 | |
| 25 | 9 | 2 | 2383 | Kaleb BURROUGHS |
USA |
1:51.38 | |
| 1 | 2389 | Stefon DODOO |
USA |
DQ | |||
| 1 | 1774 | Yerosan GIRMA |
ETH |
DQ |
ms - Milliseconds - shown when two or more competitors finish with the same time down to hundredths of a second