| Order / Lane | Bib | ATHLETE | COUNTRY | PB | SB 2023 | 
|---|---|---|---|---|---|
| 2 | 2504 | Mario LAMBRUGHI |  ITA | 48.99 | 49.05 | 
| 3 | 2090 | Julien WATRIN |  BEL | 48.66 | 48.72 | 
| 4 | 2813 | Bassem HEMEIDA |  QAT | 48.64 | 48.64 | 
| 5 | 2546 | Jaheel HYDE |  JAM | 48.03 | 48.45 | 
| 6 | 2965 | CJ ALLEN |  USA | 47.58 | 47.58 | 
| 7 | 2261 | Rasmus MÄGI |  EST | 47.82 | 48.04 | 
| 8 | 2526 | Kyron MCMASTER |  IVB | 47.08 | 47.26 | 
| 9 | 2721 | Ezekiel NATHANIEL |  NGR | 48.42 | 48.47 | 
| Order / Lane | Bib | ATHLETE | COUNTRY | PB | SB 2023 | 
|---|---|---|---|---|---|
| 2 | 2171 | Zhiyu XIE |  CHN | 48.78 | 48.78 | 
| 3 | 2363 | Emil AGYEKUM |  GER | 48.73 | 48.73 | 
| 4 | 2867 | Julien BONVIN |  SUI | 49.10 | 49.19 | 
| 5 | 2578 | Kazuki KUROKAWA |  JPN | 48.68 | 48.71 | 
| 6 | 2331 | Ludvy VAILLANT |  FRA | 47.85 | 47.85 | 
| 7 | 2971 | Rai BENJAMIN |  USA | 46.17 | 46.62 | 
| 8 | 2113 | Alison DOS SANTOS |  BRA | 46.29 | 47.66 | 
| 9 | 2623 | Wiseman Were MUKHOBE |  KEN | 48.52 | 48.52 | 
| Order / Lane | Bib | ATHLETE | COUNTRY | PB | SB 2023 | 
|---|---|---|---|---|---|
| 2 | 2515 | Alessandro SIBILIO |  ITA | 47.93 | 48.14 | 
| 3 | 2929 | Yasmani COPELLO |  TUR | 47.81 | 48.71 | 
| 4 | 2189 | Gerald DRUMMOND |  CRC | 48.11 | 48.11 | 
| 5 | 2742 | Karsten WARHOLM |  NOR | 45.94 | 46.51 | 
| 6 | 2310 | Wilfried HAPPIO |  FRA | 47.41 | 48.13 | 
| 7 | 2537 | Roshawn CLARKE |  JAM | 47.85 | 47.85 | 
| 8 | 2362 | Joshua ABUAKU |  GER | 48.32 | 48.32 | 
| 9 | 2968 | Trevor BASSITT |  USA | 47.39 | 48.26 |