I am also a runner and sometimes do run in the bike lane in the opposite direction. I've only done it in lower traffic areas, though, so neither of us is really at any risk. Sometimes when I am running and see a cyclist coming (bike lane or not), if I can see far enough to know there are no vehicles coming from behind him/her, I'll move toward the center of the road so that he/she can stay right. I figure I can see behind them better than they can, so why not.