There are
751 mi
from Sunnyvale, CA to Fountain Hills, AZ
That's the driving distance. It would take 13 hours 53 mins to go from Sunnyvale, California to Fountain Hills, Arizona.
The flight distance (direct flight from Sunnyvale, CA to Fountain Hills, AZ) is 634.40 mi.
751 mi = 1,209.15 kms