There are
1,368 mi
from Gaithersburg, MD to Watauga, TX
That's the driving distance. It would take 1 day to go from Gaithersburg, Maryland to Watauga, Texas.
The flight distance (direct flight from Gaithersburg, MD to Watauga, TX) is 1,198.90 mi.
1,368 mi = 2,201.90 kms