There are
974 mi
from Palmdale, CA to Washougal, WA
That's the driving distance. It would take 18 hours 31 mins to go from Palmdale, California to Washougal, Washington.
The flight distance (direct flight from Palmdale, CA to Washougal, WA) is 792.25 mi.
974 mi = 1,567.14 kms