Miles between National City, CA and Boulder, CO

There are
1,091 mi
from National City, CA to Boulder, CO

That's the driving distance. It would take 19 hours 20 mins to go from National City, California to Boulder, Colorado.

The flight distance (direct flight from National City, CA to Boulder, CO) is 829.55 mi.

1,091 mi = 1,755.82 kms