Once you've been running long enough, you may start to notice little behaviors of other runners that irk you. Maybe you can't stand those runners who cut you off at the water stops, or you hate it when runners throw their energy bar wrappers on trails.
Whenever I'm running in a race, I always try to stick to some basic etiquette rules for road racing. Of course, I can think of a few times when I was so exhausted in a race that I couldn't get out the words, "Thank you" as a race volunteer handed me a cup of Gatorade (even though I was very appreciative!).
Do you consider yourself a polite runner? What behaviors of other runners do you find downright rude?