Couch to 5K ® | Beginning Running First off, you may be asking, "exactly how many miles is a 5K?" A 5K is 3.1 miles. We're here to help you achieve your goal of beginning to run your first 5K. Too many people have been turned off of running simply by trying to start off too fast. Their bodies rebel, and they wind up miserable, wondering why anyone would possibly want to run in the first place. You should ease into your 5K training plan gradually. In fact, the beginners' progr