There are
637 mi
from Concord, CA to Washougal, WA
That's the driving distance. It would take 12 hours 18 mins to go from Concord, California to Washougal, Washington.
The flight distance (direct flight from Concord, CA to Washougal, WA) is 525.69 mi.
637 mi = 1,025.02 kms