There are
534 mi
from Poplar Bluff, MO to Red Oak, TX
That's the driving distance. It would take 9 hours 27 mins to go from Poplar Bluff, Missouri to Red Oak, Texas.
The flight distance (direct flight from Poplar Bluff, MO to Red Oak, TX) is 467.39 mi.
534 mi = 859.56 kms