There are
2,347 mi
from Kennewick, WA to Columbus, MS
That's the driving distance. It would take 1 day 16 hours to go from Kennewick, Washington to Columbus, Mississippi.
The flight distance (direct flight from Kennewick, WA to Columbus, MS) is 1,834.39 mi.
2,347 mi = 3,776.99 kms