I'm not sure how you can say there isn't anything to know about running. Volumes upon volumes of books, magazines, and articles have been written about every aspect of running, from training and nutrition guides to novels and short stories.

There's no need to know that any of this even exists in order to enjoy running, that's part of running's beauty. But there's lots to know if you want to.

p.s. I should add that Born to Run is an interesting read about a part of running that lots of runners don't know much about.