it depends on what you mean & also on which border you mean
there are borders less than a mile long
& there are borders thousands of miles long
but if you mean how far is it to the border then it also depends on where you are
how many miles wide is Idaho
ABOUT 355 miles.
Miles from Houston to Louisiana border
301 Miles
190 miles
At its narrowest, 200 miles. At its widest, 350 miles.
Exactly 600 miles
at least 258 miles as the crow flies
New Jersey is approximately 70 miles wide from its eastern border along the Atlantic Ocean to its western border along the Delaware River.
200 miles
How many driving miles is it from the Indiana border to the Iowa border crossing the state of Illinois?
640 miles