You can use any standard measurement you wish -- either kilometers or feet would be acceptable. Due to the size of Everglades National Park, miles would probably be preferable to feet.
In the U.S.A., miles are the standard measurement of distance for most people. Elsewhere, kilometers are the standard.
Kilometers
Distance
kilometers
you would measure a wall in meters
Kilometers would be the most likely choice.
Usually, you would use kilometers.
Kilometers
kilometers
Generally, the same things that you would measure in miles.
I would use kilometers.
Neither. By centimeters
Kilometers