When running on the reservoir in Central Park (or any narrow path, I suppose), are you supposed to stick to your right, allowing others to pass on the left? If people are running 3 abreast (though they shouldn’t be taking up the entire path in the first place), and someone is coming from the opposite direction, is it the person on the left who should get out of the way (presumably the runner going in the opposite direction should be sticking to his/her right)?