There are
628 mi
from Vallejo, CA to Washougal, WA
That's the driving distance. It would take 12 hours 6 mins to go from Vallejo, California to Washougal, Washington.
The flight distance (direct flight from Vallejo, CA to Washougal, WA) is 516.74 mi.
628 mi = 1,009.93 kms