First 3 in each heat (Q) and the next 3 fastest (q)

First 3 of each heat (Q) plus 3 fastest times (q) qualify to Semi-Final

POS Rank Heat BIB ATHLETE COUNTRY RESULTS ms*
1 1 4 2321 Jayden DAVIS USAUSA 46.32 Q
2 1 2 1548 Terrell THORNE AUSAUS 46.44 Q PB
3 1 5 1983 Kentaro SHIRAHATA JPNJPN 46.45 Q PB
4 1 6 1576 Enerst KUMEVU BOTBOT 46.69 Q
5 1 3 2341 Sidi NJIE USAUSA 46.83 Q
6 2 3 2045 Walid EL BOUSSIRI MARMAR 46.87 Q PB
7 2 6 1873 Árpád KOVÁCS HUNHUN 46.89 Q
8 2 5 1853 Malachi AUSTIN GUYGUY 46.92 Q
9 1 1 2139 Jakub SZARAPO POLPOL 46.95 Q
10 1 7 2197 Udeme OKON RSARSA 47.03 Q
11 3 6 1887 Jay KUMAR INDIND 47.08 Q
12 2 7 1635 Haoran FU CHNCHN 47.17 Q
13 3 7 2084 Gafari BADMUS NGRNGR 47.24 Q
14 4 7 1926 Simone GILIBERTO ITAITA 47.29 q PB
15 2 1 1902 Sean DOGGETT IRLIRL 47.31 Q
16 2 2 2132 Michał KIJEWSKI POLPOL 47.32 Q
17 3 1 1811 Max HUSEMANN GERGER 47.38 Q
18 3 3 1945 Kemarrio BYGRAVE JAMJAM 47.39 Q
19 4 6 1533 Jett GRUNDY AUSAUS 47.44 q
20 4 3 1979 Ryota OISHI JPNJPN 47.46 q
21 5 3 1583 Victor Elias Lino CHAVES BRABRA 47.52
22 2 4 1592 Vinícius MOURA BRABRA 47.55 Q
23 4 1 1578 Thabang Charles MONNGATHIPA BOTBOT 47.57
24 3 5 2277 Jaden CLEMENT TTOTTO 47.63 Q
25 5 1 2176 Alexandru Gabriel VOCHIN ROUROU 47.64 .632
26 3 4 2221 G.W.Jathya KIRULU SRISRI 47.64 Q .635
27 5 7 1553 Alessandro GRECO AUTAUT 47.68 .678
28 3 2 2152 Jarell CRUZ PURPUR 47.68 Q .679
29 5 6 2061 Rafael BUELNA MEXMEX 47.82
30 6 7 1705 Ian Andrey PATA ECUECU 47.84
31 4 2 2206 Jaylen BENNETT SKNSKN 47.88
32 6 3 2030 Aleksandrs TIŠČENKO LATLAT 47.98
33 6 6 2282 Kyrell THOMAS TTOTTO 48.02
34 4 5 1921 Francesco DE SANTIS ITAITA 48.07
35 5 5 1609 Pishon HAUGHTON CANCAN 48.15
36 4 4 2184 Bryan KATOO RSARSA 48.19 .188
37 6 1 2053 Muh.Khalil HELMI MASMAS 48.19 .189
38 5 4 2173 Dragos Ionut NASTASA ROUROU 48.20
39 7 6 2069 Matthew GALEA SOLER MLTMLT 48.40
40 6 4 1851 Joshem SYLVESTER GRNGRN 48.49
41 8 6 2024 Emīls LAMBA LATLAT 48.59
42 7 3 2113 Jeffrey CAJO PERPER 48.75
43 5 2 1956 Jabari MATHESON JAMJAM 49.34
44 6 2 2160 Khalid Wadi ADOUM QATQAT 49.81
45 6 5 2034 Neo NTELELE LESLES 50.67
46 7 4 1882 Bapi HANSDA INDIND 51.26
47 8 4 1520 James Lomoi LOCHAULUKA ARTART 58.03 PB
2 1660 Dominik JEZERNIK CROCRO DNF
5 2089 Caleb JOSHUA NGRNGR DQ
1 2036 Matas JANARAUSKAS LTULTU DQ
1 2164 Youssouf Abdelaziz DJIBRINE QATQAT DQ
2 1719 David GARCÍA ESPESP DNS
3 2095 Bastian ELNAN AURSTAD NORNOR DNS
5 1644 Ailixier WUMAIER CHNCHN DNS
7 1559 Zion MILLER BAHBAH DNS
Legend

ms - Milliseconds - shown when two or more competitors finish with the same time down to hundredths of a second