There are
2,382 mi
from Dayton, OH to Tualatin, OR
That's the driving distance. It would take 1 day 17 hours to go from Dayton, Ohio to Tualatin, Oregon.
The flight distance (direct flight from Dayton, OH to Tualatin, OR) is 1,981.02 mi.
2,382 mi = 3.22 kms