Well, in my opinion, 15 miles in 4 hours is way too extreme and could do injury to your body. In your case, your body is used to this rigorous excercise, but still, even so... I also agree with a previous poster that if you use running as a punishment for binging, you will stop enjoying it and make yourself hate it, and in time, you will want to quit running completely.
You know, I am a person who used to eat, eat, eat, out of boredom, out of anger, out of depression, and out of stress. I would even eat when I was happy. Now, I have come to realize, that a brisk walk is a better remedy for anger and stress than food is. I am a person who gets needled at work almost every day by co-workers (I work with a few people who are hateful and cruel, and love to poke fun at people who are thin-skinned like me). I come home, fit to be tied, in a bad mood and snapping at my family. I find just a 30 minute walk helps ease my stress and helps me chill out....
