First 2 in each heat (Q) and the next 2 fastest (q)

POS Rank Heat BIB ATHLETE COUNTRY RESULTS
1 1 1 1591 Wesley VÁZQUEZ PURPUR 1:43.96 Q
2 2 1 1295 Ferguson Cheruiyot ROTICH KENKEN 1:44.20 Q
3 3 1 1919 Clayton MURPHY USAUSA 1:44.48 q
4 1 2 1871 Donavan BRAZIER USAUSA 1:44.87 Q
5 4 1 647 Adrián BEN ESPESP 1:44.97 q PB
6 2 2 395 Marco AROP CANCAN 1:45.07 Q
7 5 1 828 Elliot GILES GBRGBR 1:45.15
8 3 2 1288 Emmanuel Kipkurui KORIR KENKEN 1:45.19
9 6 1 1531 Adam KSZCZOT POLPOL 1:45.22
10 4 2 1905 Brannon KIDDER USAUSA 1:45.62
11 1 3 272 Amel TUKA BIHBIH 1:45.63 Q
12 5 2 1379 Mostafa SMAILI MARMAR 1:45.78
13 7 1 1765 Abdessalem AYOUNI TUNTUN 1:45.80
14 2 3 1896 Bryce HOPPEL USAUSA 1:45.95 Q
15 6 2 1645 Tshepo TSHITE RSARSA 1:46.08
16 3 3 651 Álvaro DE ARRIBA ESPESP 1:46.09
17 7 2 104 Yassine HETHAT ALGALG 1:46.15
18 4 3 412 Brandon MCBRIDE CANCAN 1:46.21
19 5 3 845 Kyle LANGFORD GBRGBR 1:46.41
20 6 3 1281 Alex Ngeno KIPNGETICH KENKEN 1:46.61
21 8 1 1593 Abubaker Haydar ABDALLA QATQAT 1:46.87
22 7 3 761 Pierre-Ambroise BOSSE FRAFRA 1:47.60
23 8 2 851 Jamie WEBB GBRGBR 1:48.44
3 1376 Oussama NABIL MARMAR DQ