When I was running regularly I averaged 18-25 miles per week. When I was close to my half marathon I was around the 30 mile per week mark. I've dropped the running hard the last two months, but really want to work my way back in.
I tend to do five to six days per week of exercise, when things were more balanced I was doing three days of strength training (either a 3 day FB routine or a 3 day LB/push/pull split) with a cardio chaser like my stationary bike/elliptical/kickboxing bag, and three days of running. I tried for one tempo run, one lactose interval run, one long run each week. Long run was subjective.

I never ran more than every other day. I also try to do yoga every day. I've been more successfully consistent lately with the strength training and yoga.
I calorie count as well. I target around 1850, more on weekends and during training as well. I shoot for 30% protein, I often hit 50-60% carb, 10-15% fat. I need to up the fat a little, and I don't always make the protein high enough. Carbs kill me - I have a hard time running when I'm too carb heavy and the protein is too low. Makes me feel sluggish.