There is a darkly humorous thread at letsrun.com, a very popular site for runners, which may be of interest.
The upshot is that a surprising number of people are saying that they do not wash their hands after using restrooms and arguing that they are better off because of it. I don’t think there is anything unique about the running population with regards to this topic except for the fact that runners seem willing to openly discuss anything that has to do with their bodies. All I can say is that it makes me happy that I seldom dine out.