The 1904 swimming competition was the only time in Olympic history that racing distances were measured in yards.
[1][2] The 10 events at the swimming competitions were held at a man-made lake that was used for life-saving exhibitions by the coast guard.
[3] The short sprint, at 50 yards (46 m), made its first Olympic appearance in 1904.
The 1000 metres and 4000 metres were replaced with the much shorter 440 yards (400 m) and 1-mile (1,600 m) events, making the 200 the only freestyle event to be held for the second time in a row.
The obstacle course and underwater swimming events were eliminated, while breaststroke made its Olympic debut.