There are
1,620 mi
from Kansas City, MO to Walla Walla, WA
That's the driving distance. It would take 1 day 3 hours to go from Kansas City, Missouri to Walla Walla, Washington.
The flight distance (direct flight from Kansas City, MO to Walla Walla, WA) is 1,295.07 mi.
1,620 mi = 1.61 kms