| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS | ms* |
|---|---|---|---|---|---|---|---|
| 1 | 1 | 1 | 2113 | Alison DOS SANTOS |
BRA |
48.12 Q | |
| 2 | 2 | 1 | 2331 | Ludvy VAILLANT |
FRA |
48.27 Q | |
| 3 | 1 | 4 | 2362 | Joshua ABUAKU |
GER |
48.32 Q PB | |
| 4 | 1 | 5 | 2971 | Rai BENJAMIN |
USA |
48.35 Q | |
| 5 | 2 | 4 | 2965 | CJ ALLEN |
USA |
48.36 Q | |
| 6 | 3 | 4 | 2537 | Roshawn CLARKE |
JAM |
48.39 Q | |
| 7 | 1 | 2 | 2526 | Kyron MCMASTER |
IVB |
48.47 Q | .464 |
| 8 | 4 | 4 | 2721 | Ezekiel NATHANIEL |
NGR |
48.47 Q SB | .467 |
| 9 | 2 | 2 | 2261 | Rasmus MÄGI |
EST |
48.58 Q | |
| 10 | 2 | 5 | 2546 | Jaheel HYDE |
JAM |
48.63 Q | .624 |
| 11 | 1 | 3 | 2310 | Wilfried HAPPIO |
FRA |
48.63 Q | .628 |
| 12 | 3 | 5 | 2578 | Kazuki KUROKAWA |
JPN |
48.71 Q SB | |
| 13 | 5 | 4 | 2090 | Julien WATRIN |
BEL |
48.72 q SB | |
| 14 | 3 | 2 | 2968 | Trevor BASSITT |
USA |
48.73 Q | .721 |
| 15 | 4 | 5 | 2189 | Gerald DRUMMOND |
CRC |
48.73 Q | .722 |
| 16 | 2 | 3 | 2742 | Karsten WARHOLM |
NOR |
48.76 Q | |
| 17 | 5 | 5 | 2929 | Yasmani COPELLO |
TUR |
48.92 q | |
| 18 | 6 | 5 | 2363 | Emil AGYEKUM |
GER |
49.00 q | |
| 19 | 6 | 4 | 2504 | Mario LAMBRUGHI |
ITA |
49.05 q SB | |
| 20 | 4 | 2 | 2623 | Wiseman Were MUKHOBE |
KEN |
49.10 Q | |
| 21 | 3 | 1 | 2867 | Julien BONVIN |
SUI |
49.19 Q SB | |
| 22 | 4 | 1 | 2171 | Zhiyu XIE |
CHN |
49.25 Q | |
| 23 | 5 | 2 | 2241 | Sergio FERNÁNDEZ |
ESP |
49.26 | |
| 24 | 7 | 4 | 2210 | Vít MÜLLER |
CZE |
49.37 | |
| 25 | 5 | 1 | 2852 | Matic Ian GUČEK |
SLO |
49.40 SB | |
| 26 | 6 | 1 | 2387 | Constantin PREIS |
GER |
49.45 | |
| 27 | 3 | 3 | 2813 | Bassem HEMEIDA |
QAT |
49.50 Q | .495 |
| 28 | 4 | 3 | 2515 | Alessandro SIBILIO |
ITA |
49.50 Q | .500 |
| 29 | 7 | 5 | 2061 | Shakeem HALL-SMITH |
BAH |
49.61 | |
| 30 | 5 | 3 | 2868 | Dany BRAND |
SUI |
49.69 | |
| 31 | 6 | 2 | 2932 | İsmail NEZIR |
TUR |
49.92 | |
| 32 | 6 | 3 | 2234 | Pablo Andres IBAÑEZ GUEVARA |
ESA |
50.01 | |
| 33 | 8 | 4 | 2576 | Yusaku KODAMA |
JPN |
50.18 | |
| 34 | 7 | 2 | 2761 | Eric CRAY |
PHI |
50.27 | |
| 35 | 8 | 5 | 2422 | Árpád BÁNÓCZY |
HUN |
50.31 PB | |
| 36 | 7 | 3 | 2465 | Santhosh Kumar TAMILARASAN |
IND |
50.46 | |
| 37 | 9 | 5 | 2849 | Jun Jie Calvin QUEK |
SGP |
50.53 | |
| 38 | 8 | 3 | 2643 | Marc Anthony IBRAHIM |
LBN |
50.62 | |
| 39 | 9 | 3 | 2486 | Malique SMITH |
ISV |
50.86 | |
| 40 | 8 | 2 | 2575 | Takayuki KISHIMOTO |
JPN |
50.90 | |
| 41 | 9 | 2 | 2853 | Andrea ERCOLANI VOLTA |
SMR |
52.69 | |
| 1 | 2560 | Assinie WILSON |
JAM |
DNF | |||
| 1 | 2008 | Abdelmalik LAHOULOU |
ALG |
DNF |
ms - Milliseconds - shown when two or more competitors finish with the same time down to hundredths of a second