First 2 in each heat (Q) and the next 2 fastest (q)

First 2 (Q) and fastest 2 (q) advance to the Semi-Final

POS Rank Heat BIB ATHLETE COUNTRY RESULTS ms*
1 1 1 133 Julien WATRIN BELBEL 45.88 Q NIR
2 1 5 421 Carl BENGTSTRÖM SWESWE 46.45 Q
3 2 1 444 Trevor BASSITT USAUSA 46.47 Q
4 2 5 293 Christopher TAYLOR JAMJAM 46.48 Q
5 3 5 187 Bruno HORTELANO-ROIG ESPESP 46.49 q .483
6 1 3 171 Patrik ŠORM CZECZE 46.49 Q .485
7 2 3 175 Benjamin Lobo VEDEL DENDEN 46.58 Q
8 1 4 469 Marqueze WASHINGTON USAUSA 46.66 Q
9 1 2 437 Jereem RICHARDS TTOTTO 46.69 Q
10 2 2 299 Mikhail LITVIN KAZKAZ 46.72 Q
11 3 1 363 Kajetan DUSZYŃSKI POLPOL 46.75 q
12 3 3 240 Patrick SCHNEIDER GERGER 46.76
13 4 3 113 Tom WILLEMS AUSAUS 46.77
14 2 4 402 Boško KIJANOVIĆ SRBSRB 46.88 Q
15 3 2 391 Zakithi NENE RSARSA 46.92
16 4 5 348 Håvard Bentdal INGVALDSEN NORNOR 46.95
17 4 1 332 Isayah BOERS NEDNED 47.07
18 3 4 167 Pavel MASLÁK CZECZE 47.31
19 5 1 309 Mazen Mawtan AL YASEN KSAKSA 47.65
20 4 2 186 Manuel GUIJARRO ESPESP 47.74
21 4 4 327 Jovan STOJOSKI MKDMKD 47.80
22 5 2 102 Pau BLASI ANDAND 49.82
23 5 3 161 Quentin PETIT COMCOM 51.55 SB
24 5 5 275 Malique SMITH ISVISV 51.98 SB
4 142 Lucas CARVALHO BRABRA DQ
Legend

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