Dan Waern ( born 17 January 1933 ) is a retired Swedish middle-distance runner , who in 1957 became the first Swede to run a sub-four-minute mile .
Dan Waern , born 17 January 1933 in Sköldinge , Sweden , is a Swedish former middle-distance runner . In 1957 , he he became the first Swede to run the first sub-four-minute mile .