There are
2,838 mi
from Ukiah, CA to Greenbelt, MD
That's the driving distance. It would take 2 days 2 hours to go from Ukiah, California to Greenbelt, Maryland.
The flight distance (direct flight from Ukiah, CA to Greenbelt, MD) is 2,457.24 mi.
2,838 mi = 4,567.64 kms