Thanks for the feedback all. Trekathlete, just for your reference I'm in my early 30's 5'10" 161ish lbs. In the past I've had IT band issues, plantar fasciitis, and I think maybe runner's knee (in addition to a stupid muscle pull while playing soccer a few years back), so I'd like to avoid those stupid things that were largely my own doing. First thing is I have to do is get new running shoes, because I do pronate on my left foot and having the wrong shoes definitely contributed to some of those early nagging injuries. But I'll definitely have to do what you all suggest, or something like the couch to 5k program, since I do tend to out-do and overdo myself trying to run longer too soon. Especially since I've been putting in long trainer sessions throughout the winter, I don't want to have a false sense of fitness if my cardiovascular system is capable of handling far more than my muscular system can as far as running goes.