There are
965 mi
from Hanford, CA to Sammamish, WA
That's the driving distance. It would take 18 hours 44 mins to go from Hanford, California to Sammamish, Washington.
The flight distance (direct flight from Hanford, CA to Sammamish, WA) is 791.57 mi.
965 mi = 1,552.66 kms