There are
2,599 mi
from Rockville, MD to Azusa, CA
That's the driving distance. It would take 1 day 22 hours to go from Rockville, Maryland to Azusa, California.
The flight distance (direct flight from Rockville, MD to Azusa, CA) is 2,266.99 mi.
2,599 mi = 4,183.01 kms