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

First 2 of each heat (WQ) plus 2 fastest times (Wq) qualify to World Athletics Championships and World Athletics Relays Final

POS Rank Heat BIB ATHLETE COUNTRY RESULTS
1 1 1 USA United States USAUSA 3:26.05 WQ
2 1 2 ESP Spain ESPESP 3:26.25 WQ
3 2 1 FRA France FRAFRA 3:26.46 WQ
4 3 1 NOR Norway NORNOR 3:26.61 Wq SB
5 2 2 ITA Italy ITAITA 3:27.03 WQ SB
6 4 1 CAN Canada CANCAN 3:27.28 Wq SB
7 3 2 GBR Great Britain & NI GBRGBR 3:27.47
8 4 2 BEL Belgium BELBEL 3:27.78 SB
9 1 3 RSA South Africa RSARSA 3:28.01 WQ NR
10 2 3 GER Germany GERGER 3:28.63 WQ SB
11 3 3 IRL Ireland IRLIRL 3:30.06 SB
12 5 2 BRA Brazil BRABRA 3:30.31 SB
13 4 3 KEN Kenya KENKEN 3:31.67
14 5 1 AUS Australia AUSAUS 3:31.78
15 5 3 POL Poland POLPOL 3:32.82
16 6 2 BOT Botswana BOTBOT 3:33.01 SB
17 7 2 SUI Switzerland SUISUI 3:36.78 SB
18 6 1 CHN PR of China CHNCHN 3:36.83 SB
19 7 1 ZAM Zambia ZAMZAM 3:37.98 SB
20 6 3 JAM Jamaica JAMJAM 3:40.54