There are
939 mi
from Yakima, WA to Arroyo Grande, CA
That's the driving distance. It would take 18 hours 37 mins to go from Yakima, Washington to Arroyo Grande, California.
The flight distance (direct flight from Yakima, WA to Arroyo Grande, CA) is 793.45 mi.
939 mi = 1,510.46 kms