| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS | ms* | 
|---|---|---|---|---|---|---|---|
| 1 | 1 | 1 | 2786 | Ferguson Cheruiyot ROTICH | 
 KEN                 | 
                1:43.75 Q | |
| 2 | 2 | 1 | 1077 | Peter BOL | 
 AUS                 | 
                1:44.13 Q AR | |
| 3 | 3 | 1 | 2047 | Elliot GILES | 
 GBR                 | 
                1:44.49 Q | |
| 4 | 4 | 1 | 2887 | Abdelati EL GUESSE | 
 MAR                 | 
                1:44.84 q PB | |
| 5 | 1 | 4 | 1269 | Nijel AMOS | 
 BOT                 | 
                1:45.04 Q | |
| 6 | 5 | 1 | 3937 | Isaiah JEWETT | 
 USA                 | 
                1:45.07 q | |
| 7 | 2 | 4 | 2787 | Michael SARUNI | 
 KEN                 | 
                1:45.21 Q | |
| 8 | 1 | 2 | 1420 | Marco AROP | 
 CAN                 | 
                1:45.26 Q | |
| 9 | 3 | 4 | 1784 | Adrián BEN | 
 ESP                 | 
                1:45.30 Q | |
| 10 | 1 | 6 | 2780 | Emmanuel Kipkurui KORIR | 
 KEN                 | 
                1:45.33 Q | |
| 11 | 2 | 6 | 3186 | Mateusz BORKOWSKI | 
 POL                 | 
                1:45.34 Q | |
| 12 | 4 | 4 | 1095 | Jeffrey RISELEY | 
 AUS                 | 
                1:45.41 q | |
| 13 | 2 | 2 | 1225 | Amel TUKA | 
 BIH                 | 
                1:45.48 Q | |
| 14 | 1 | 3 | 3956 | Clayton MURPHY | 
 USA                 | 
                1:45.53 Q | |
| 15 | 3 | 2 | 1978 | Gabriel TUAL | 
 FRA                 | 
                1:45.63 Q | |
| 16 | 5 | 4 | 2891 | Oussama NABIL | 
 MAR                 | 
                1:45.64 q | .632 | 
| 17 | 3 | 6 | 3935 | Bryce HOPPEL | 
 USA                 | 
                1:45.64 Q | .638 | 
| 18 | 2 | 3 | 2064 | Daniel ROWDEN | 
 GBR                 | 
                1:45.73 Q | .723 | 
| 19 | 3 | 3 | 3648 | Abdessalem AYOUNI | 
 TUN                 | 
                1:45.73 Q SB | .728 | 
| 20 | 4 | 3 | 1087 | Charlie HUNTER | 
 AUS                 | 
                1:45.91 q | |
| 21 | 6 | 4 | 1947 | Pierre-Ambroise BOSSE | 
 FRA                 | 
                1:45.97 q | |
| 22 | 5 | 3 | 1807 | Saúl ORDÓÑEZ | 
 ESP                 | 
                1:45.98 | |
| 23 | 6 | 1 | 3027 | Tony VAN DIEPEN | 
 NED                 | 
                1:46.03 | |
| 24 | 4 | 6 | 2894 | Mostafa SMAILI | 
 MAR                 | 
                1:46.05 | |
| 25 | 4 | 2 | 1810 | Pablo SÁNCHEZ-VALLADARES | 
 ESP                 | 
                1:46.06 | |
| 26 | 1 | 5 | 2930 | Jesus Tonatiu LOPEZ | 
 MEX                 | 
                1:46.14 Q | |
| 27 | 2 | 5 | 1193 | Eliott CRESTAN | 
 BEL                 | 
                1:46.19 Q | |
| 28 | 5 | 6 | 1007 | Yassine HETHAT | 
 ALG                 | 
                1:46.20 | |
| 29 | 6 | 3 | 1435 | Brandon MCBRIDE | 
 CAN                 | 
                1:46.32 | |
| 30 | 5 | 2 | 3565 | Andreas KRAMER | 
 SWE                 | 
                1:46.44 | |
| 31 | 3 | 5 | 3190 | Patryk DOBEK | 
 POL                 | 
                1:46.59 Q | |
| 32 | 4 | 5 | 2343 | Mark ENGLISH | 
 IRL                 | 
                1:46.75 | |
| 33 | 6 | 2 | 2043 | Oliver DUSTIN | 
 GBR                 | 
                1:46.94 | |
| 34 | 7 | 4 | 3273 | Ryan SÁNCHEZ | 
 PUR                 | 
                1:47.07 | |
| 35 | 5 | 5 | 1976 | Benjamin ROBERT | 
 FRA                 | 
                1:47.12 | |
| 36 | 7 | 2 | 1534 | Alex BEDDOES | 
 COK                 | 
                1:47.26 NR | |
| 37 | 7 | 1 | 1021 | Pol MOYA | 
 AND                 | 
                1:47.44 SB | |
| 38 | 6 | 6 | 3289 | Abubaker Haydar ABDALLA | 
 QAT                 | 
                1:47.45 | |
| 39 | 8 | 4 | 1305 | Thiago ANDRÉ | 
 BRA                 | 
                1:47.75 | |
| 40 | 7 | 3 | 1873 | Melese NBERET | 
 ETH                 | 
                1:47.80 | |
| 41 | 6 | 5 | 1165 | Eric NZIKWINKUNDA | 
 BDI                 | 
                1:47.97 | |
| 42 | 8 | 2 | 1381 | Francky MBOTTO | 
 CAF                 | 
                1:48.26 NR | |
| 43 | 8 | 1 | 2825 | Musa HAJDARI | 
 KOS                 | 
                1:48.96 | |
| 44 | 7 | 6 | 3278 | Wesley VÁZQUEZ | 
 PUR                 | 
                1:49.06 SB | |
| 45 | 7 | 5 | 3265 | Andrés ARROYO | 
 PUR                 | 
                1:53.09 | |
| 46 | 8 | 5 | 1680 | Dennick LUKE | 
 DMA                 | 
                1:54.30 | |
| 47 | 8 | 3 | 1729 | James Nyang CHIENGJIEK | 
 ART                 | 
                2:02.04 | |
| 6 | 1678 | Ayanleh SOULEIMAN | 
 DJI                 | 
                DNS | 
ms - Milliseconds - shown when two or more competitors finish with the same time down to hundredths of a second