If the event is medley swimming turns vary based on the combination order of what stroke the swimmer is changing from and to. According to the USA Swimming Stroke and Turn Regulations, in order of the strokes the turns are to be: Butterfly to backstroke is a two-hand touch open turn  Backstroke to breaststroke the swimmer must first touch on their back and then flip and/or turn in whatever way based on swimmer preference Breaststroke to freestyle is two hand touch open turn  .
If the event is medley swimming turns vary based on the combination order of what stroke the swimmer is changing from and to. According to the USA Swimming Stroke and Turn Regulations, in order of the strokes the turns are to be: Butterfly to backstroke is a two-hand touch open turn . Once a legal touch has been made, the swimmer may turn in any manner, but the shoulders must be at or past vertical towards the back when the swimmer leaves the wall. Backstroke to breaststroke the swimmer must first touch on their back . Once a legal touch has been made, the swimmer may turn in any manner. Breaststroke to freestyle is two hand touch open turn . Once a legal touch has been made, the swimmer may turn in any manner .
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. Once a legal touch has been made, the swimmer may turn in any manner, but the shoulders must be at or past vertical towards the back when the swimmer leaves the wall.
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and then flip and/or turn in whatever way based on swimmer preference
. Once a legal touch has been made, the swimmer may turn in any manner.
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. Once a legal touch has been made, the swimmer may turn in any manner