I don't do long distance, but I am a big guy, and I used to get shin splints as well as just sore knees. I changed over to some shoes that mimic bare feet running and the difference was pretty surprising. I run a little faster now and I never get sore anymore. It's not for everybody and it takes a couple of weeks to run longer than a mile or two, but I've been very happy. I use vibram five fingers, but I think there are a few other brands out there.