Ok, I understand the benefits of building your mileage if you're a beginner and your body just isn't adapted to running, but I can't think of anything in life where you benefit from doing the same thing over and over again at a low effort level of activity. Is the real benefit of high mileage weight loss/management?
Long slow distance = rapid weight loss right? Doing three, ten mile runs a week > six five mile runs? This has definitely been the case for me.