| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS | ms* | 
|---|---|---|---|---|---|---|---|
| 1 | 1 | 2 | 2091 | Abel KIPSANG |  KEN | 3:33.68 Q | |
| 2 | 2 | 2 | 1769 | Mohamed KATIR |  ESP | 3:34.45 Q SB | |
| 3 | 3 | 2 | 1890 | Jake WIGHTMAN |  GBR | 3:34.48 Q | |
| 4 | 4 | 2 | 1800 | Teddese LEMI |  ETH | 3:35.04 Q | |
| 5 | 5 | 2 | 1543 | Stewart MCSWEYN |  AUS | 3:35.07 Q | |
| 6 | 6 | 2 | 2227 | Michał ROZMYS |  POL | 3:35.27 q SB | |
| 7 | 7 | 2 | 2425 | Joshua THOMPSON |  USA | 3:35.55 q SB | |
| 8 | 8 | 2 | 2205 | Samuel TANNER |  NZL | 3:36.32 | |
| 9 | 1 | 1 | 1876 | Josh KERR |  GBR | 3:36.92 Q | |
| 10 | 2 | 1 | 1765 | Mario GARCÍA |  ESP | 3:37.01 Q | |
| 11 | 3 | 1 | 2190 | Jakob INGEBRIGTSEN |  NOR | 3:37.02 Q | |
| 12 | 4 | 1 | 2083 | Timothy CHERUIYOT |  KEN | 3:37.04 Q | |
| 13 | 5 | 1 | 1763 | Ignacio FONTES |  ESP | 3:37.21 Q | |
| 14 | 6 | 1 | 1870 | Neil GOURLEY |  GBR | 3:37.22 | |
| 15 | 7 | 1 | 1653 | Charles PHILIBERT-THIBOUTOT |  CAN | 3:37.29 | |
| 16 | 8 | 1 | 2380 | John GREGOREK |  USA | 3:37.35 | |
| 17 | 9 | 1 | 1803 | Samuel TEFERA |  ETH | 3:37.71 | |
| 18 | 10 | 1 | 1537 | Oliver HOARE |  AUS | 3:38.36 | |
| 19 | 9 | 2 | 1655 | Cameron PROCEVIAT |  CAN | 3:38.83 | |
| 20 | 10 | 2 | 2345 | Santiago CATROFE |  URU | 3:40.16 | |
| 21 | 11 | 2 | 1652 | William PAULSON |  CAN | 3:40.41 | .403 | 
| 21 | 11 | 1 | 2121 | Charles GRETHEN |  LUX | 3:40.41 | .403 | 
| 23 | 12 | 1 | 1974 | Andrew COSCORAN |  IRL | 3:44.66 | |
| 24 | 12 | 2 | 2102 | Kumari TAKI |  KEN | 3:50.15 | 
ms - Milliseconds - shown when two or more competitors finish with the same time down to hundredths of a second