There are
1,713 mi
from Fremont, CA to Duncanville, TX
That's the driving distance. It would take 1 day 6 hours to go from Fremont, California to Duncanville, Texas.
The flight distance (direct flight from Fremont, CA to Duncanville, TX) is 1,452.85 mi.
1,713 mi = 1.61 kms