This will depend on what you are trying to practice. Running in the aim of burning calories should be done three times a week, which burns approximately 3,000 calories. When you are running for the coming competition and you are still a beginner, you can run for about 2 miles (30 minutes) at a slow relaxed pace each and everyday depending on your time schedule.
It depends on how hard you run, how fast, how much you push yourself. If you over exert yourself, you can get serious injuries. I would suggest, either jogging a mile each day OR running a mile every other (ish) days.