There are
2,669 mi
from Rockville, MD to Delano, CA
That's the driving distance. It would take 1 day 23 hours to go from Rockville, Maryland to Delano, California.
The flight distance (direct flight from Rockville, MD to Delano, CA) is 2,300.41 mi.
2,669 mi = 4,295.01 kms