ONLY RUNNERS GET THIS BUMPER STICKER
I've been seeing this bumper sticker around town.
I figured it was some biblical passage and verse,
or something . . .
Then I saw
THIS BUMPER STICKER!
(Exactly two times the first number,
so I did some digging and googling.)
THESE ARE MARATHON AND HALF-MARATHON NUMBERS.
A half marathon is a road running event of 21,097.5 meters,
or 13-7/64 miles, about 13.1 miles.
(And a full marathon, of course, is twice that.)
So that settles that one.