We Are Runners.

"What does it mean to be a runner? Simply that you run.
'To move the legs quickly,' says the Oxford English Dictionary, '(the one foot being lifted before the other is set down) so as to go at a faster pace than walking; to cover the ground, make one's way, rapidly in this manner.' Now, consider what the dictionary says about jogging: 'To move up and down or to and fro with a heavy unsteady motion; to move on at a heavy or labored pace, to trudge.' Is that the kind of activity you see yourself doing? No. You don't jog-you run. It doesn't matter how fast, how far, or how often you run, if you're moving faster than you would if you were walking, you are a runner."
--Claire Kowalchik (author of The Complete Book of Running for Women)