There are
1,326 mi
from Rockville, MD to Sachse, TX
That's the driving distance. It would take 23 hours 50 mins to go from Rockville, Maryland to Sachse, Texas.
The flight distance (direct flight from Rockville, MD to Sachse, TX) is 1,162.52 mi.
1,326 mi = 2,134.15 kms