There are
2,384 mi
from Boise, ID to Greenbelt, MD
That's the driving distance. It would take 1 day 17 hours to go from Boise, Idaho to Greenbelt, Maryland.
The flight distance (direct flight from Boise, ID to Greenbelt, MD) is 2,048.05 mi.
2,384 mi = 3.22 kms