There are
1,872 mi
from Kennewick, WA to Midlothian, TX
That's the driving distance. It would take 1 day 8 hours to go from Kennewick, Washington to Midlothian, Texas.
The flight distance (direct flight from Kennewick, WA to Midlothian, TX) is 1,507.38 mi.
1,872 mi = 3,012.81 kms