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487.67 miles
California borders Mexico.
301 Miles
750 mi
about 108 miles
1200 miles
At the California/Mexico border it is a matter of inches.
A few miles at most, they may even have a common border!
200
the state of California is 840 miles long.
The Rio Grande starts about 500 miles east of California's south east border.
The two states share a common border.