There are
1,688 mi
from Arvada, CO to Greenbelt, MD
That's the driving distance. It would take 1 day 6 hours to go from Arvada, Colorado to Greenbelt, Maryland.
The flight distance (direct flight from Arvada, CO to Greenbelt, MD) is 1,500.92 mi.
1,688 mi = 1.61 kms