A guy walks into the bar.
It's hardly surprising he didn't make the steeplechase team, on reflection.
If ten zombies run after you, what time is it?
Ten after one.
Which athlete wrote the book, Jumping for Exercize?
Lee Ping.
How do crazy runners go through the forest?
They take the psychopath!
What did his wife give the guy when he came home all sweaty from his run?
The stink eye.