There are
1,659 mi
from Gaithersburg, MD to Lafayette, CO
That's the driving distance. It would take 1 day 5 hours to go from Gaithersburg, Maryland to Lafayette, Colorado.
The flight distance (direct flight from Gaithersburg, MD to Lafayette, CO) is 1,480.49 mi.
1,659 mi = 2,669.91 kms