When the runner is going against traffic, I can usually see 'em coming, so things go okay. There's generally enough room for both of us.
Yesterday it was a cyclist cruising through campus roads against traffic who I hope felt shriveled by my "COULD YOU POSSIBLY BE AS STUPID AS YOU'RE ACTING" stare (though, I'm afraid, my facial-expression skills are notoriously bad - he might have thought I was madly attracted to him ) .