There are
2,428 mi
from Parma, OH to Washougal, WA
That's the driving distance. It would take 1 day 18 hours to go from Parma, Ohio to Washougal, Washington.
The flight distance (direct flight from Parma, OH to Washougal, WA) is 2,034.74 mi.
2,428 mi = 3.22 kms