There are
2,711 mi
from Gaithersburg, MD to Covington, WA
That's the driving distance. It would take 2 days to go from Gaithersburg, Maryland to Covington, Washington.
The flight distance (direct flight from Gaithersburg, MD to Covington, WA) is 2,295.67 mi.
2,711 mi = 4,363.37 kms