There are
1,746 mi
from Fairfield, CA to Duncanville, TX
That's the driving distance. It would take 1 day 6 hours to go from Fairfield, California to Duncanville, Texas.
The flight distance (direct flight from Fairfield, CA to Duncanville, TX) is 1,461.35 mi.
1,746 mi = 2,809.26 kms