There are
1,396 mi
from Rancho Cucamonga, CA to Duncanville, TX
That's the driving distance. It would take 23 hours 53 mins to go from Rancho Cucamonga, California to Duncanville, Texas.
The flight distance (direct flight from Rancho Cucamonga, CA to Duncanville, TX) is 1,195.61 mi.
1,396 mi = 1.61 kms