There are
1,718 mi
from San Leandro, CA to Duncanville, TX
That's the driving distance. It would take 1 day 6 hours to go from San Leandro, California to Duncanville, Texas.
The flight distance (direct flight from San Leandro, CA to Duncanville, TX) is 1,463.23 mi.
1,718 mi = 1.61 kms