There are
1,812 mi
from Pendleton, OR to Duncanville, TX
That's the driving distance. It would take 1 day 7 hours to go from Pendleton, Oregon to Duncanville, Texas.
The flight distance (direct flight from Pendleton, OR to Duncanville, TX) is 1,469.33 mi.
1,812 mi = 2,916.19 kms