There are
1,615 mi
from Merced, CA to Duncanville, TX
That's the driving distance. It would take 1 day 4 hours to go from Merced, California to Duncanville, Texas.
The flight distance (direct flight from Merced, CA to Duncanville, TX) is 1,368.86 mi.
1,615 mi = 2,599.63 kms