If I ever see a car with a "5k" sticker on it, I just assume they're a fatty. Who else would celebrate running 3.1 miles?I actually had a Facebook friend who would post all of his "runs." I say "runs" because they were always like 2.1 miles in 27 minutes. I mean, good for you that you're trying to get in shape and all, but it's kind of silly to post that. I get that some people use it as motivation etc etc, but I can't help rolling my eyes.