There are
2,677 mi
from Rockville, MD to Oxnard, CA
That's the driving distance. It would take 1 day 23 hours to go from Rockville, Maryland to Oxnard, California.
The flight distance (direct flight from Rockville, MD to Oxnard, CA) is 2,333.26 mi.
2,677 mi = 4,308.06 kms