What swimming event can swimmers change strokes?
You change strokes in the IM, Individual Medley, but it’s in a certain order. First you do Butterfly, Then Backstroke, then Breaststroke, and then freestyle. In the IM you have to do the crawl for freestyle but in a freestyle event you can do a different stroke for the whole event, but it’s not advised unless you’re much faster in another stroke then the crawl.
