Or play baseball - like me - I get all the workout PLUS more than you do just running - I did get the pains at first - but now after about a month it doesnt hurt anymore at all. And plus I have FUN doing it. Not just being bored out of my mind running around a track or something. Plus with baseball you work the upper body also. My upper body is ****ing awsome now.
The only thing I noticed that baseball does not work on is the gut. I still have a gut... Running doesnt effect the gut either. So I have started to do like 100 situps before bed everynight. I still haven't seen any results... In time I might raise it to 200 or maybe 300 - or maybe it just takes time - I only been doing situps for like a week (if that).
But yeah - I dont run - it is pointless. Play a sport that involves running - not jogging, but short vigorous sprints. Like Baseball. Works perfect for me.