How come michael phelps doesn't do the 1500M medley?

Question

How come michael phelps doesn't do the 1500M medley?

Answer 1

There is not a 1500 medley race in the olympics.

Answer 2

I think that a good answer for this question is "Phelps didn't participate in the 1500M, so how come he wins?"

Any way Michael Phelps is not a long distant swimmer, I noticed that from his career, the longest distance he got medals from was 400M.