| POS | BIB | ATHLETE | COUNTRY | MARK | 
|---|---|---|---|---|
| 1 | 563 | Edwin Kiplagat MELLY |  KEN | 1:48.27 Q PB | 
| 2 | 734 | Wesley VÁZQUEZ |  PUR | 1:48.78 Q | 
| 3 | 355 | Ben Waterman |  GBR | 1:49.48 Q | 
| 4 | 684 | Brad MATHAS |  NZL | 1:49.73 | 
| 5 | 731 | Guilherme Pinto |  POR | 1:50.45 PB | 
| 6 | 940 | Tanner Sork |  USA | 1:50.80 | 
| 7 | 544 | Shota Kozuma |  JPN | 1:53.40 | 
| 8 | 671 | Roald Hagbart Frøskeland |  NOR | 1:54.12 | 
| 9 | 876 | Agit Mutlu |  TUR | 2:00.60 | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 400m | 53.79 |  Edwin Kiplagat MELLY |  KEN | 
| POS | BIB | ATHLETE | COUNTRY | MARK | 
|---|---|---|---|---|
| 1 | 93 | Nijel AMOS |  BOT | 1:48.31 Q | 
| 2 | 808 | Abdelgadir Elnazeer |  SUD | 1:48.66 Q SB | 
| 3 | 71 | Anthonio Mascoll |  BAR | 1:49.31 Q | 
| 4 | 947 | Shaquille Walker |  USA | 1:49.55 q | 
| 5 | 831 | Johan ROGESTEDT |  SWE | 1:50.25 | 
| 6 | 245 | Daniel Andújar |  ESP | 1:50.30 | 
| 7 | 672 | Filip INGEBRIGTSEN |  NOR | 1:50.74 | 
| 8 | 858 | Mark London |  TTO | 1:53.23 | 
| 9 | 189 | Alex BEDDOES |  COK | 1:58.30 NJ | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 400m | 55.11 |  Shaquille WALKER |  USA | 
| POS | BIB | ATHLETE | COUNTRY | MARK | 
|---|---|---|---|---|
| 1 | 743 | Jamal HAIRANE |  QAT | 1:47.61 Q PB | 
| 2 | 293 | Jena Umar |  ETH | 1:47.80 Q | 
| 3 | 794 | Žan RUDOLF |  SLO | 1:48.63 Q | 
| 4 | 77 | Shaquille Dill |  BER | 1:49.06 q PB | 
| 5 | 45 | Nikolaus Franzmair |  AUT | 1:49.31 q NJ | 
| 6 | 74 | Joren Bouckaert |  BEL | 1:49.74 | 
| 7 | 39 | Robert Lister |  AUS | 1:51.42 | 
| 8 | 498 | Jacopo Lahbi |  ITA | 1:55.45 | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 400m | 51.67 |  Jena UMAR |  ETH | 
| POS | BIB | ATHLETE | COUNTRY | MARK | 
|---|---|---|---|---|
| 1 | 569 | Timothy Kitum |  KEN | 1:47.96 Q | 
| 2 | 4 | Mohamed Belbachir |  ALG | 1:48.24 Q PB | 
| 3 | 143 | Tyler Smith |  CAN | 1:48.78 Q | 
| 4 | 348 | Sean Molloy |  GBR | 1:50.43 | 
| 5 | 252 | Ignacio Díaz-Cano |  ESP | 1:51.62 | 
| 6 | 749 | Valentin Voicu |  ROU | 1:52.18 | 
| 7 | 208 | Christos Dimitriou |  CYP | 1:52.59 | 
| 8 | 644 | Alberto Mamba |  MOZ | 1:52.91 | 
| 9 | 80 | Rondre Lewis |  BIZ | 2:03.67 PB | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 400m | 52.36 |  Christos DIMITRIOU |  CYP | 
| POS | BIB | ATHLETE | COUNTRY | MARK | 
|---|---|---|---|---|
| 1 | 457 | Mark ENGLISH |  IRL | 1:51.74 Q | 
| 2 | 385 | Dennis Krüger |  GER | 1:51.86 Q | 
| 3 | 49 | Dominik Stadlmann |  AUT | 1:53.78 Q | 
| 4 | 707 | Artur Kuciapski |  POL | 1:53.95 | 
| 5 | 37 | Joel Hogarth |  AUS | 1:53.98 | 
| 6 | 899 | Jorge Collares |  URU | 1:55.19 PB | 
| 7 | 810 | Mohamed Ahmed Ismail |  SUD | 1:58.65 | 
| 286 | Fiker Belete |  ETH | DQ | |
| 166 | Carlos Martín DÍAZ DEL RIO |  CHI | DNS | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 400m | 58.41 |  Fiker BELETE |  ETH | 
| POS | BIB | ATHLETE | COUNTRY | MARK | 
|---|---|---|---|---|
| 1 | 620 | Radouane Baaziri |  MAR | 1:50.45 Q | 
| 2 | 757 | Thapelo Madiba |  RSA | 1:50.52 Q | 
| 3 | 737 | Muayad Mohamed Ahmed |  QAT | 1:50.57 Q | 
| 4 | 73 | Brecht Bertels |  BEL | 1:51.18 | 
| 5 | 5 | Mohamed Amine Layachi |  ALG | 1:51.84 | 
| 6 | 788 | Žan Kozan |  SLO | 1:52.01 | 
| 7 | 686 | Julian OAKLEY |  NZL | 1:54.74 | 
| 8 | 800 | Nemanja Kojic |  SRB | 1:54.79 | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 400m | 55.33 |  Nemanja KOJIC |  SRB | 
| POS | BIB | ATHLETE | COUNTRY | MARK | 
|---|---|---|---|---|
| 1 | 142 | Brandon MCBRIDE |  CAN | 1:49.77 Q | 
| 2 | 542 | Sho KAWAMOTO |  JPN | 1:50.12 Q | 
| 3 | 395 | Kevin Stadler |  GER | 1:50.39 Q | 
| 4 | 897 | Oleksandr Shelest |  UKR | 1:50.70 PB | 
| 5 | 199 | Víctor Emilio Ortiz |  CRC | 1:51.01 | 
| 6 | 169 | Alejandro Peirano |  CHI | 1:51.45 | 
| 7 | 459 | Karl Griffin |  IRL | 1:51.98 | 
| 8 | 483 | Soufiane El Kabbouri |  ITA | 1:52.11 | 
| 9 | 961 | Geabel Ali Al-Muradi |  YEM | 1:52.73 PB | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 400m | 53.40 |  Brandon MCBRIDE |  CAN |