First 0 in each heat (Q)

First 2 of each heat qualify to World Athletics Championships (WQ)

POS Rank Heat BIB ATHLETE COUNTRY RESULTS ms*
1 1 2 AUS Australia AUSAUS 42.88 WQ SB
2 2 2 GBR Great Britain & NI GBRGBR 42.90 WQ SB
3 1 1 FRA France FRAFRA 42.92 WQ SB .911
4 3 2 SUI Switzerland SUISUI 42.92 SB .914
5 2 1 NGR Nigeria NGRNGR 42.94 WQ SB
6 3 1 HUN Hungary HUNHUN 43.32 NR
7 4 1 RSA South Africa RSARSA 43.56
8 5 1 BEL Belgium BELBEL 43.59 SB
9 4 2 IRL Ireland IRLIRL 44.25 SB
10 5 2 CHI Chile CHICHI 44.31 SB
11 6 2 NED Netherlands NEDNED 44.41
12 7 2 BOT Botswana BOTBOT 44.93 SB
13 6 1 IND India INDIND 53.90
Legend

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