| Order / Lane | Bib | ATHLETE | COUNTRY | PB | SB 2022 | 
|---|---|---|---|---|---|
| 2 | 2075 | Julian Jrummi WALSH |  JPN | 45.13 | 45.27 | 
| 3 | 1566 | Jonathan JONES |  BAR | 44.43 | 44.43 | 
| 4 | 1719 | Patrik Å ORM |  CZE | 45.41 | 45.78 | 
| 5 | 1551 | Steven SOLOMON |  AUS | 44.94 | 45.28 | 
| 6 | 2268 | Wayde VAN NIEKERK |  RSA | 43.03 | 44.58 | 
| 7 | 1872 | Alex HAYDOCK-WILSON |  GBR | 45.57 | 45.69 | 
| Order / Lane | Bib | ATHLETE | COUNTRY | PB | SB 2022 | 
|---|---|---|---|---|---|
| 2 | 2141 | Luis AVILÉS FERREIRO |  MEX | 44.95 | 45.83 | 
| 3 | 2410 | Michael NORMAN |  USA | 43.45 | 43.56 | 
| 4 | 2041 | Christopher TAYLOR |  JAM | 44.79 | 45.45 | 
| 5 | 1731 | Benjamin Lobo VEDEL |  DEN | 45.52 | 45.52 | 
| 6 | 2220 | Kajetan DUSZYŃSKI |  POL | 44.92 | 45.94 | 
| 7 | 2264 | Zakithi NENE |  RSA | 44.92 | 44.92 | 
| 8 | 1572 | Kévin BORLÉE |  BEL | 44.56 | 45.12 | 
| Order / Lane | Bib | ATHLETE | COUNTRY | PB | SB 2022 | 
|---|---|---|---|---|---|
| 2 | 1597 | Anthony PESELA |  BOT | 44.58 | 45.62 | 
| 3 | 2366 | Michael CHERRY |  USA | 44.03 | 44.28 | 
| 4 | 2436 | Obediah TIMBACI |  VAN | 50.49 | 52.85 | 
| 5 | 2293 | Ricky PETRUCCIANI |  SUI | 45.02 | 45.79 | 
| 6 | 2035 | Jevaughn POWELL |  JAM | 44.87 | 44.87 | 
| 7 | 2437 | Muzala SAMUKONGA |  ZAM | 45.21 | 45.21 | 
| 8 | 1579 | Alexander DOOM |  BEL | 45.34 | 45.36 | 
| Order / Lane | Bib | ATHLETE | COUNTRY | PB | SB 2022 | 
|---|---|---|---|---|---|
| 2 | 1594 | Isaac MAKWALA |  BOT | 43.72 | 45.03 | 
| 3 | 2351 | Champion ALLISON |  USA | 43.70 | 43.70 | 
| 4 | 2008 | Davide RE |  ITA | 44.77 | 45.80 | 
| 5 | 2321 | Dwight ST. HILLAIRE |  TTO | 44.55 | 45.41 | 
| 6 | 2282 | Boško KIJANOVIĆ |  SRB | 45.59 | 45.59 | 
| 7 | 1571 | Dylan BORLÉE |  BEL | 45.18 | 45.18 | 
| 8 | 2080 | Mikhail LITVIN |  KAZ | 45.25 | 46.04 | 
| Order / Lane | Bib | ATHLETE | COUNTRY | PB | SB 2022 | 
|---|---|---|---|---|---|
| 2 | 2154 | Dexter MAYORGA |  NCA | 48.02 | 48.02 | 
| 3 | 2014 | Nathon ALLEN |  JAM | 44.13 | 45.21 | 
| 4 | 1945 | Kirani JAMES |  GRN | 43.74 | 44.02 | 
| 5 | 2069 | Fuga SATO |  JPN | 45.40 | 45.40 | 
| 6 | 1526 | Alex BECK |  AUS | 45.54 | 45.79 | 
| 7 | 2009 | Edoardo SCOTTI |  ITA | 45.21 | 45.69 | 
| 8 | 1595 | Bayapo NDORI |  BOT | 44.88 | 44.88 | 
| Order / Lane | Bib | ATHLETE | COUNTRY | PB | SB 2022 | 
|---|---|---|---|---|---|
| 2 | 1874 | Matthew HUDSON-SMITH |  GBR | 44.35 | 44.35 | 
| 3 | 1502 | Aiden HAZZARD |  AIA | 48.42 | |
| 4 | 2057 | Kaito KAWABATA |  JPN | 45.73 | 45.73 | 
| 5 | 1736 | Lidio Andres FELIZ |  DOM | 44.64 | 44.64 | 
| 6 | 2159 | Liemarvin BONEVACIA |  NED | 44.48 | 45.34 | 
| 7 | 1605 | Lucas CARVALHO |  BRA | 45.37 | 45.70 | 
| 8 | 1979 | Christopher O'DONNELL |  IRL | 45.26 | 45.26 |