| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS | ms* |
|---|---|---|---|---|---|---|---|
| 1 | 1 | 3 | 618 | Ayanleh Souleiman |
 DJI |
3:36.16 Q | |
| 2 | 2 | 3 | 106 | Taoufik Makhloufi |
 ALG |
3:36.18 Q | |
| 3 | 3 | 3 | 1707 | Kalle Berglund |
 SWE |
3:36.19 Q | |
| 4 | 4 | 3 | 829 | Neil Gourley |
 GBR |
3:36.31 Q | |
| 5 | 5 | 3 | 1882 | Craig Engels |
 USA |
3:36.35 Q | |
| 6 | 6 | 3 | 1799 | Ronald Musagala |
 UGA |
3:36.54 Q | |
| 7 | 7 | 3 | 1292 | Ronald Kwemoi |
 KEN |
3:36.66 q | |
| 8 | 8 | 3 | 658 | Jesus Gomez |
 ESP |
3:36.72 q | |
| 9 | 1 | 2 | 1273 | Timothy Cheruiyot |
KEN |
3:36.82 Q | |
| 10 | 9 | 3 | 170 | Stewart McSweyn |
 AUS |
3:36.88 q | |
| 11 | 2 | 2 | 843 | Josh Kerr |
GBR |
3:36.99 Q | |
| 12 | 3 | 2 | 1868 | Ben Blankenship |
USA |
3:37.13 Q | |
| 13 | 4 | 2 | 1484 | Filip Ingebrigtsen |
 NOR |
3:37.26 Q | |
| 14 | 5 | 2 | 1374 | Abdelaati Iguider |
 MAR |
3:37.44 Q | |
| 15 | 6 | 2 | 660 | Kevin López |
ESP |
3:37.62 Q | |
| 16 | 1 | 1 | 1486 | Jakob Ingebrigtsen |
NOR |
3:37.67 Q | |
| 17 | 2 | 1 | 786 | Alexis Miellet |
 FRA |
3:37.69 Q | .683 |
| 18 | 3 | 1 | 1872 | Matthew Centrowitz |
USA |
3:37.69 Q | .690 |
| 19 | 4 | 1 | 852 | Jake Wightman |
GBR |
3:37.72 Q | |
| 20 | 5 | 1 | 1532 | Marcin Lewandowski |
 POL |
3:37.75 Q | |
| 21 | 6 | 1 | 900 | Amos Bartelsmeyer |
 GER |
3:37.80 Q | |
| 22 | 7 | 1 | 709 | Samuel Tefera |
 ETH |
3:37.82 q | |
| 23 | 7 | 2 | 250 | Isaac Kimeli |
 BEL |
3:37.87 q | |
| 24 | 8 | 2 | 615 | Youssouf Hiss Bachir |
DJI |
3:37.93 q | |
| 25 | 8 | 1 | 664 | Adel Mechaal |
ESP |
3:37.95 | |
| 26 | 9 | 2 | 1297 | Kumari Taki |
KEN |
3:37.98 | |
| 27 | 9 | 1 | 588 | Filip Sasínek |
 CZE |
3:38.17 | |
| 28 | 10 | 1 | 1294 | George Meitamei Manangoi |
KEN |
3:38.39 | |
| 29 | 11 | 1 | 166 | Ryan Gregson |
AUS |
3:38.69 | |
| 30 | 12 | 1 | 617 | Abdi Waiss Mouhyadin |
DJI |
3:38.79 | |
| 31 | 10 | 3 | 248 | Ismael Debjani |
BEL |
3:39.11 | |
| 32 | 11 | 3 | 587 | Jakub Holuša |
CZE |
3:39.79 | |
| 33 | 13 | 1 | 1377 | Hicham Ouladha |
MAR |
3:39.86 | .853 |
| 34 | 10 | 2 | 1043 | Jinson Johnson |
 IND |
3:39.86 | .856 |
| 35 | 12 | 3 | 1669 | Abdullahi Jama Mohamed |
 SOM |
3:40.84 | |
| 36 | 11 | 2 | 707 | Teddese Lemi |
ETH |
3:41.32 q | |
| 37 | 13 | 3 | 1599 | Abdirahman Saeed Hassan |
 QAT |
3:42.24 | |
| 38 | 12 | 2 | 1326 | Musulman Dzholomanov |
 KGZ |
3:45.07 | |
| 39 | 14 | 1 | 367 | Abraham Kipchirchir Rotich |
 BRN |
3:45.19 | |
| 40 | 14 | 3 | 1674 | Yach Majok Koon Wol |
 SSD |
3:46.24 | |
| 41 | 13 | 2 | 171 | Matthew Ramsden |
AUS |
3:47.59 q | |
| 42 | 14 | 2 | 148 | Paulo Amotun Lokoro |
 ART |
3:48.98 | |
| 43 | 15 | 1 | 2029 | Lucirio Garrido |
 VEN |
3:52.93 | |
| 2 | 765 | Rabii Doukkana |
FRA |
DNS | |||
| 3 | 1375 | Brahim Kaazouzi |
MAR |
DNS |
Legend
ms - Milliseconds - shown when two or more competitors finish with the same time down to hundredths of a second