I have read on other forums that hiking won't really benefit a running program. If that's what you asked and that's what you want to do, then the answer you received may be correct.

As to whether hiking will benefit you and your health, well, that is another matter. Discuss with your doctor, but my feeling is the best exercise is the exercise that one will do. Personally, I enjoy weightlifting and hiking. I'm not a superstar at either, but it's what I enjoy and do.