There are
2,680 mi
from Irvine, CA to Greenbelt, MD
That's the driving distance. It would take 1 day 23 hours to go from Irvine, California to Greenbelt, Maryland.
The flight distance (direct flight from Irvine, CA to Greenbelt, MD) is 2,287.31 mi.
2,680 mi = 4,313.51 kms