Individual medley

The individual medley is also called the IM. In this event you must swim all four strokes like the medley relay, but the order of strokes is different. You start with butterfly, followed by backstroke, then breaststroke, and ending with freestyle.  This is one of the most competitive events swimmers compete in. This event can be distances of 100, 200, or 400 meters or yards, depending on the size of the pool.