There are
1,073 mi
from Yakima, WA to Fountain Valley, CA
That's the driving distance. It would take 20 hours 51 mins to go from Yakima, Washington to Fountain Valley, California.
The flight distance (direct flight from Yakima, WA to Fountain Valley, CA) is 900.82 mi.
1,073 mi = 1,727.03 kms