Swimmers intending to enter long distance events must obtain a qualifying time in a shorter event.

 These are:

Distance	Event	Qualifying time	50m Equivalent for no previous time
25m	Any	Slower than 25 seconds over 25m
50m	Any		25 seconds over 25m
100m	Women’s Freestyle	1.45	50 seconds over 50m
100m	Men’s Freestyle	1.45	50 seconds over 50m
100m	Women’s Backstroke	1.55	55 seconds over 50m
100m	Men’s Backstroke	1.55	55 seconds over 50m
100m	Women’s Breaststroke	2.10	60 seconds over 50m
100m	Men’s Breaststroke	2.10	60 seconds over 50m
100m	Women’s Butterfly	1.50	55 seconds over 50m
100m	Men’s Butterfly	1.45	55 seconds over 50m
100m	Women’s IM	2.10	50 seconds over 50m FS
100m	Men’s IM	2.05	50 seconds over 50m FS
200m	Women’s Freestyle	3.35	50 seconds over 50m
200m	Men’s Freestyle	3.30	50 seconds over 50m
200m	Women’s Backstroke	3.45	55 seconds over 50m
200m	Men’s Backstroke	3.35	55 seconds over 50m
200m	Women’s Breaststroke	4.15	60 seconds over 50m
200m	Men’s Breaststroke	4.05	60 seconds over 50m
200m	Women’s Butterfly	3.55	55 seconds over 50m
200m	Men’s Butterfly	3.45	55 seconds over 50m
200m	Women’s IM	4.15	60 seconds over 50m BS
200m	Men’s IM	4.15	60 seconds over 50m BS
400m	Women’s Freestyle	6.20
400m	Men’s Freestyle	6.15
400m	Women’s IM
400m	Men’s IM