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

First 2 of each heat (Q) plus 2 fastest times (q) qualify to Final

POS Rank Heat BIB ATHLETE COUNTRY RESULTS ms*
1 1 3 2629 Emmanuel WANYONYI KENKEN 1:43.83 Q
2 2 3 2237 Adrián BEN ESPESP 1:43.92 Q PB
3 1 1 2009 Slimane MOULA ALGALG 1:43.93 Q
4 1 2 2134 Marco AROP CANCAN 1:44.02 Q
5 3 3 2995 Bryce HOPPEL USAUSA 1:44.04 q
6 2 1 2098 Tshepiso MASALELA BOTBOT 1:44.14 Q PB
7 3 1 2356 Ben PATTISON GBRGBR 1:44.23 q
8 4 1 2766 Mateusz BORKOWSKI POLPOL 1:44.30 PB .291
9 4 3 2318 Yanis MEZIANE FRAFRA 1:44.30 =PB .298
10 5 3 2489 Simone BARONTINI ITAITA 1:44.34 PB
11 5 1 2236 Mohamed ATTAOUI ESPESP 1:44.35 PB
12 6 1 2325 Benjamin ROBERT FRAFRA 1:44.38
13 2 2 2010 Djamel SEDJATI ALGALG 1:44.49 Q
14 7 1 2660 Abdelati EL GUESSE MARMAR 1:44.55
15 6 3 2896 Andreas KRAMER SWESWE 1:44.57 SB
16 3 2 2256 Saúl ORDÓÑEZ ESPESP 1:44.74
17 4 2 2520 Catalin TECUCEANU ITAITA 1:44.79 PB
18 5 2 2329 Gabriel TUAL FRAFRA 1:44.83
19 7 3 2471 Mark ENGLISH IRLIRL 1:45.14 SB
20 6 2 2781 Filip OSTROWSKI POLPOL 1:45.30 PB
21 7 2 2358 Daniel ROWDEN GBRGBR 1:45.38
22 8 2 2617 Alex Ngeno KIPNGETICH KENKEN 1:45.56
23 8 3 2341 Max BURGIN GBRGBR 1:47.60
24 8 1 2036 Joseph DENG AUSAUS 1:48.12
Legend

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