There are
1,354 mi
from Gaithersburg, MD to Cedar Hill, TX
That's the driving distance. It would take 1 day to go from Gaithersburg, Maryland to Cedar Hill, Texas.
The flight distance (direct flight from Gaithersburg, MD to Cedar Hill, TX) is 1,192.05 mi.
1,354 mi = 2,178.34 kms