There are
2,623 mi
from Irvine, CA to Rockville, MD
That's the driving distance. It would take 1 day 23 hours to go from Irvine, California to Rockville, Maryland.
The flight distance (direct flight from Irvine, CA to Rockville, MD) is 2,272.11 mi.
2,623 mi = 3.22 kms