There are
1,321 mi
from Frederick, MD to Seagoville, TX
That's the driving distance. It would take 23 hours 50 mins to go from Frederick, Maryland to Seagoville, Texas.
The flight distance (direct flight from Frederick, MD to Seagoville, TX) is 1,163.77 mi.
1,321 mi = 2,125.36 kms