There are
818 mi
from Alameda, CA to Sammamish, WA
That's the driving distance. It would take 15 hours 50 mins to go from Alameda, California to Sammamish, Washington.
The flight distance (direct flight from Alameda, CA to Sammamish, WA) is 682.46 mi.
818 mi = 1,315.73 kms