Qualified 7th from heats. Finished 7th at 2016 OG, 10th in 2012, 6th in 2008, 9th in 2004, 5th in 1972. Finished 13th at 2019 WCh, 6th in 2017, 8th in 2015. Silver at PanAm Games in 2015. Canada have competed at 10 OG since making their debut in Tokyo in 1964 and are yet to win an Olympic medal.
Qualified 5th from heats. Bronze at 2000 OG, 5th in 2016, 9th in 2012, DSQ in 2008, 12th in 2004 and 1988, 4th in 1996 and 1972, 6th in 1992, 10th in 1984. Silver at 2017 WCh, bronze in 1994, 6th in 2019, 4th in 2015. Gold at PanAm Games in 2019 was their seventh victory in that event. Gold at 2018 PanPacific Ch.
Qualified 3rd from heats. Gold at 2000 OG, silver in 1984, bronze in 2016, 2008, 1968, 1964. Gold at WCh in 2011 and 2001. Silver at 1998 WCh, bronze in 2019 and 2005. Gold at CWG 10 times, including 2018, 2014, 2010. The first team to deny USA OG gold in this event, in 2000. The AUS team, featuring a 17-year-old Ian THORPE, set world record to win only OG gold.
Qualified 1st from heats. Finished 9th at 2016 OG, 7th in 2012. Best-ever OG placing of 4th in 2008 and 2004, 5th in 2000, 10th in 1992, 8th in 1988 and 1984. 9th on OG debut in 1972. Finished 4th at 2019 WCh, 7th in 2017, bronze in 2015 and 1975. Bronze at 2021 European Ch, silver in 2018 and 2016. Italy have reached final in six of their nine appearances in event at OG.
Qualified 2nd from heats. Defending OG and current WCh. Seven consecutive OG golds from 1964 to 1996 (event was not contested at 1980 OG) and also won gold at 2008 and 2016 OG. Silver at 2000 and 2012 OG, bronze in 2004. At WCh, USA lead all-time medal table with 16 (13 gold). Set WCh record of 3:09.06 in 2019. Set current WR at 2008 OG.
Qualified 4th from heats. Gold at 2012 OG, silver in 2016 and 2008, 7th in 2004, 2000 and 1972, 11th in 1996, 4th in 1992 and 1988, 6th in 1984, 8th in 1964. Won WCh in 2015 and 2013. Gold at European Ch in 2016, 2014, 2012. Disqualified in OG debut at 1964 OG in Tokyo, Japan. Did not win medal until ninth appearance at OG in 2008.
Qualified 6th from heats. Disqualified at 2016 OG, 14th in 2012. Finished 7th at 2019 WCh, bronze in 2017. Finished 4th at 2021 European Ch. Appearance at 2012 OG marked HUN return to this event at OG after a 44-year absence. They finished 9th in both 1968 and 1964 OG. Disqualified from 2016 OG 'because all relay-only swimmers did not compete'.
USA
CAN
BRA
AUS
ITA
FRA
HUN
ROC
