There are
2,812 mi
from Santa Maria, CA to Greenbelt, MD
That's the driving distance. It would take 2 days 1 hour to go from Santa Maria, California to Greenbelt, Maryland.
The flight distance (direct flight from Santa Maria, CA to Greenbelt, MD) is 2,397.69 mi.
2,812 mi = 4,525.25 kms