There are
375 mi
from Gaithersburg, MD to Salisbury, NC
That's the driving distance. It would take 7 hours 13 mins to go from Gaithersburg, Maryland to Salisbury, North Carolina.
The flight distance (direct flight from Gaithersburg, MD to Salisbury, NC) is 299.66 mi.
375 mi = 603.82 kms