There are
2,644 mi
from San Bernardino, CA to Greenbelt, MD
That's the driving distance. It would take 1 day 22 hours to go from San Bernardino, California to Greenbelt, Maryland.
The flight distance (direct flight from San Bernardino, CA to Greenbelt, MD) is 2,249.78 mi.
2,644 mi = 3.22 kms