First 3 in each heat (Q) and the next 6 fastest (q)

First 3 of each heat (Q) plus 6 fastest times (q) qualify to Semi-Final

POS Rank Heat BIB ATHLETE COUNTRY RESULTS ms*
1 1 5 1637 Marco AROP CANCAN 1:44.56 Q
2 2 5 2146 Jesus Tonatiu LOPEZ MEXMEX 1:44.67 Q SB
3 3 5 1975 Mark ENGLISH IRLIRL 1:44.76 Q SB
4 4 5 2011 Catalin TECUCEANU ITAITA 1:44.83 q PB
5 1 6 1507 Slimane MOULA ALGALG 1:44.90 Q
6 2 6 2093 Wyclife KINYAMAL KENKEN 1:45.08 Q
7 3 6 2128 Abdelati EL GUESSE MARMAR 1:45.25 Q =SB
8 5 5 2086 Noah KIBET KENKEN 1:45.41 q
9 1 2 1527 Peter BOL AUSAUS 1:45.50 Q
10 4 6 1887 Daniel ROWDEN GBRGBR 1:45.53 q SB
11 2 2 1878 Kyle LANGFORD GBRGBR 1:45.68 Q
12 3 2 1764 Mariano GARCÍA ESPESP 1:45.74 Q
13 6 5 2300 Andreas KRAMER SWESWE 1:45.77 q
14 5 6 1792 Tolesa BODENA ETHETH 1:45.81 q
15 4 2 1845 Benjamin ROBERT FRAFRA 1:45.94 q
16 7 5 1505 Yassine HETHAT ALGALG 1:46.05
17 5 2 1589 Abedin MUJEZINOVIĆ BIHBIH 1:46.26 SB
18 1 3 1847 Gabriel TUAL FRAFRA 1:46.34 Q
19 1 4 1508 Djamel SEDJATI ALGALG 1:46.39 Q
20 2 3 2103 Emmanuel WANYONYI KENKEN 1:46.45 Q
21 2 4 2169 Tony VAN DIEPEN NEDNED 1:46.59 Q .583
22 3 4 2323 Abdessalem AYOUNI TUNTUN 1:46.59 Q .589
23 3 3 1576 Eliott CRESTAN BELBEL 1:46.61
24 4 4 1756 Adrián BEN ESPESP 1:46.71
25 6 2 2361 Donavan BRAZIER USAUSA 1:46.72
26 6 6 2219 Patryk DOBEK POLPOL 1:46.80
27 4 3 2386 Bryce HOPPEL USAUSA 1:46.98
28 5 4 2407 Brandon MILLER USAUSA 1:47.29
29 5 3 2216 Mateusz BORKOWSKI POLPOL 1:47.61 .602
30 6 4 2267 Tshepo TSHITE RSARSA 1:47.61 .604
31 7 4 2203 Brad MATHAS NZLNZL 1:47.70
32 6 3 2015 Navasky ANDERSON JAMJAM 1:48.37
33 7 2 2229 Patryk SIERADZKI POLPOL 1:48.78
34 1 1 2094 Emmanuel Kipkurui KORIR KENKEN 1:49.05 Q
35 2 1 2130 Elhassane MOUJAHID MARMAR 1:49.27 Q
36 3 1 1762 Álvaro DE ARRIBA ESPESP 1:49.30 Q
37 4 1 1797 Ermias GIRMA ETHETH 1:49.36
38 7 6 2279 Žan RUDOLF SLOSLO 1:49.87
39 5 1 1918 Marc REUTHER GERGER 1:50.75
40 7 3 1649 Brandon MCBRIDE CANCAN 1:57.43
41 6 1 2312 Manuel Belo Amaral ATAIDE TLSTLS 1:58.91 SB
3 2135 Moad ZAHAFI MARMAR DQ
5 2397 Jonah KOECH USAUSA DQ
2 1932 Alex AMANKWA GHAGHA DQ
1 1859 Max BURGIN GBRGBR DNS
Legend

ms - Milliseconds - shown when two or more competitors finish with the same time down to hundredths of a second