There are
1,185 mi
from Dearborn, MI to Duncanville, TX
That's the driving distance. It would take 21 hours 25 mins to go from Dearborn, Michigan to Duncanville, Texas.
The flight distance (direct flight from Dearborn, MI to Duncanville, TX) is 1,004.24 mi.
1,185 mi = 1.61 kms