| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS | 
|---|---|---|---|---|---|---|
| 1 | 1 | 5 | 979 | Joshua Tiampati Masikonde |  KEN | 1:47.84 Q | 
| 2 | 2 | 5 | 277 | Thiago ANDRÉ |  BRA | 1:48.05 Q | 
| 3 | 3 | 5 | 192 | Dominik Stadlmann |  AUT | 1:49.07 Q PB | 
| 4 | 1 | 6 | 190 | Nikolaus Franzmair |  AUT | 1:49.30 Q | 
| 5 | 4 | 5 | 246 | Aurele VANDEPUTTE |  BEL | 1:49.40 q | 
| 6 | 1 | 4 | 565 | Jena Umar |  ETH | 1:49.44 Q | 
| 7 | 5 | 5 | 259 | Yan SLOMA |  BLR | 1:49.48 q PB | 
| 8 | 2 | 4 | 661 | Kyle LANGFORD |  GBR | 1:49.73 Q | 
| 9 | 1 | 3 | 972 | Alfred KIPKETER |  KEN | 1:49.80 Q | 
| 10 | 6 | 5 | 1333 | Lucijan Zalokar |  SLO | 1:49.84 q | 
| 11 | 2 | 6 | 641 | Theo Blundell |  GBR | 1:49.89 Q | 
| 12 | 3 | 4 | 856 | Enrico Riccobon |  ITA | 1:49.96 Q | 
| 13 | 2 | 3 | 1096 | Tony VAN DIEPEN |  NED | 1:50.04 Q | 
| 14 | 3 | 3 | 1543 | Tre'tez Kinnaird |  USA | 1:50.07 Q | 
| 15 | 3 | 6 | 1225 | Andres Gonzalez |  PUR | 1:50.10 Q PB | 
| 16 | 4 | 6 | 104 | Takieddine Hedeilli |  ALG | 1:50.15 q | 
| 17 | 4 | 3 | 609 | Nasredine KHATIR |  FRA | 1:50.18 q | 
| 18 | 4 | 4 | 1300 | Konstantin Tolokonnikov |  RUS | 1:50.19 q | 
| 19 | 1 | 2 | 1383 | Andreas ALMGREN |  SWE | 1:50.27 Q | 
| 20 | 5 | 6 | 516 | Alberto GUERRERO |  ESP | 1:50.53 | 
| 21 | 2 | 2 | 807 | Karl Griffin |  IRL | 1:50.69 Q | 
| 22 | 1 | 1 | 152 | Luke Mathews |  AUS | 1:50.76 Q | 
| 23 | 3 | 2 | 532 | Axel Vives |  ESP | 1:50.77 Q | 
| 24 | 6 | 6 | 1235 | Abubaker Haydar ABDALLA |  QAT | 1:50.79 | 
| 25 | 5 | 4 | 1093 | Vincent Hazeleger |  NED | 1:50.90 | 
| 26 | 2 | 1 | 1385 | Kalle BERGLUND |  SWE | 1:50.99 Q | 
| 27 | 4 | 2 | 150 | Jordan Makins |  AUS | 1:51.02 | 
| 28 | 3 | 1 | 562 | Mamush Lencha |  ETH | 1:51.23 Q | 
| 29 | 5 | 3 | 329 | Elijah Silva |  CAN | 1:51.26 | 
| 30 | 4 | 1 | 1223 | Andrés ARROYO |  PUR | 1:51.63 | 
| 31 | 5 | 2 | 325 | Robert HEPPENSTALL |  CAN | 1:51.66 | 
| 32 | 6 | 3 | 1466 | Utku Çobanoglu |  TUR | 1:51.73 | 
| 33 | 7 | 6 | 1038 | Jawad Douhri |  MAR | 1:51.76 | 
| 34 | 7 | 5 | 851 | Lorenzo Pilati |  ITA | 1:51.87 | 
| 35 | 6 | 4 | 895 | Kevon Robinson |  JAM | 1:51.89 | 
| 36 | 7 | 3 | 506 | Abrham Tsegay |  ERI | 1:52.16 | 
| 37 | 6 | 2 | 1359 | Jonas SCHÖPFER |  SUI | 1:52.26 | 
| 38 | 5 | 1 | 713 | Marc REUTHER |  GER | 1:52.33 | 
| 39 | 7 | 2 | 472 | Kristian Uldbjerg HANSEN |  DEN | 1:52.35 | 
| 40 | 7 | 4 | 1057 | Jesus Tonatiu LOPEZ |  MEX | 1:52.59 | 
| 41 | 8 | 3 | 778 | Gergő KISS |  HUN | 1:52.73 | 
| 42 | 8 | 6 | 810 | Robert Tully |  IRL | 1:52.86 | 
| 43 | 8 | 2 | 1545 | Myles MARSHALL |  USA | 1:53.98 | 
| 44 | 6 | 1 | 393 | Rosel Lusanga Kafwa |  COD | 1:54.81 PB | 
| 45 | 7 | 1 | 1238 | Mohamed Elnour Mohamed |  QAT | 1:55.17 | 
| 46 | 8 | 4 | 1440 | Nicholas Landeau |  TTO | 1:56.40 | 
| 47 | 8 | 5 | 113 | Pol MOYA |  AND | 1:58.44 | 
| 1 | 1067 | Omar Rosales |  MEX | DQ R163.3(a) |