According to my copy of The Times Atlas of the World (Mini Edition), the USA has an area of
3,787,422 Square Miles, which works out at 9,809,378 Square Kilometers (if you prefer using that unit of
measurement instead).
According to the measuring tools on Google Earth, there are these distances between places there..............
Miami (Florida) - Seattle (Washington) = 2,732.24 miles
Seattle (Washington) - San Diego (California) = 1,062.68 miles
San Diego (California) - Miami (Florida) = 2,269.02 miles
Miami (Florida) - Bangor (Maine) = 1,458.19 miles
Statue of Liberty (New York City) - Golden Gate Bridge (San Francisco, California) = 2,572.31 miles
Philadelphia (Pennsylvania) - New York City (New York State) = 80miles.