There are
733 mi
from Yakima, WA to Redwood City, CA
That's the driving distance. It would take 14 hours 36 mins to go from Yakima, Washington to Redwood City, California.
The flight distance (direct flight from Yakima, WA to Redwood City, CA) is 636.10 mi.
733 mi = 1,179.68 kms