There are
1,473 mi
from Sioux Falls, SD to Sammamish, WA
That's the driving distance. It would take 1 day 1 hour to go from Sioux Falls, South Dakota to Sammamish, Washington.
The flight distance (direct flight from Sioux Falls, SD to Sammamish, WA) is 1,253.06 mi.
1,473 mi = 1.61 kms