Running 2 miles every so often isn't going to be the death of you. In fact, it might be beneficial. And probably better than doing nothing.
But "better than nothing" is not the standard I hold my players and coaches to. Neither should you. Your coaches should know the tenets of training pitchers and at least have a cursory understanding of the basic research done out there.
I know that's asking a lot (a whole 20-40 hours of independent research instead of relying on what you were told), but if we're into developing pitchers, we owe it to them to learn as much as possible.
Again, if anyone wants to learn on their own instead of wait for an answer - usually the best policy - google what Mark Twight and Lyle McDonald have to say on the subject. It won't be easy to learn right off the bat, but that shouldn't deter you from learning.
I absolutely adore this post and everyone should re-read it. Thanks, Kyle!