1) You are driving and you look outside your window and think to yourself 'man, this would be a great place to run'.
2) You secretly wish you were living at high altitude and had a nice weather conditions and an open field to go running.
3) You (secretly) discriminate against non-runners.
4) You look at a fat kid and think to yourself 'he will never be a runner, that's for sure'
5) You have your personal favourite collection of running movies, like 'Running Brave', 'Without Limits' and 'Chariots of Fire' in your DVD collection.