What do you call a married couple who compete in the marathon side-by-side?
Running mates.
Why can't tomatoes ever beat lettuce in a race?
Because lettuce is always a head, and tomatoes have to ketchup!
Why did the vegetarian stop running cross country?
He did not like the meets.
Why did the barber win the race?
He took a short cut!
A guy walks into the bar.
It's hardly surprising he didn't make the steeplechase team, on reflection.