There are
2,194 mi
from Dayton, OH to Walla Walla, WA
That's the driving distance. It would take 1 day 14 hours to go from Dayton, Ohio to Walla Walla, Washington.
The flight distance (direct flight from Dayton, OH to Walla Walla, WA) is 1,767.52 mi.
2,194 mi = 3.22 kms