There are
346 mi
from Gaithersburg, MD to Thomasville, NC
That's the driving distance. It would take 6 hours 42 mins to go from Gaithersburg, Maryland to Thomasville, North Carolina.
The flight distance (direct flight from Gaithersburg, MD to Thomasville, NC) is 275.07 mi.
346 mi = 556.54 kms