12 Surprising Facts And Numbers All About Those Runner Feet

These facts and figures ensure that you’ll be able to put your best foot forward—at least when it comes to podial knowledge.


The average length toenails grow per month.


The year the first women’s running shoe was sold by Nike.

20 percent

The percentage of the U.S. population that has high arches.

25 percent

The percentage of the U.S. population that has flat feet.

5-6 months

How long it will take to regrow a lost toenail.

Size 5-13

The size range for women’s athletic shoes (in the U.S.).


We have roughly this many nerves in our feet.

10 percent

The estimated percentage of the U.S. population with toenail fungus.


Shoe sizes were first established this year by King Edward II of England. The diameter of one grain of barley (about a third of an inch) represented the difference between sizes.


The number of sweat glands in a pair of feet.

54,000 years ago

Shoes were first fashioned out of animal skins during the Ice Age.

1 in 1,000

The rate at which infants are born with polydactyly, meaning they have one or more extra toes or fingers.