There are
2,356 mi
from Dayton, OH to Troutdale, OR
That's the driving distance. It would take 1 day 17 hours to go from Dayton, Ohio to Troutdale, Oregon.
The flight distance (direct flight from Dayton, OH to Troutdale, OR) is 1,962.34 mi.
2,356 mi = 3.22 kms