There are
709 mi
from Ukiah, CA to Kennewick, WA
That's the driving distance. It would take 14 hours 25 mins to go from Ukiah, California to Kennewick, Washington.
The flight distance (direct flight from Ukiah, CA to Kennewick, WA) is 529.69 mi.
709 mi = 1,140.56 kms