There are
1,724 mi
from Sioux Falls, SD to Walnut Creek, CA
That's the driving distance. It would take 1 day 5 hours to go from Sioux Falls, South Dakota to Walnut Creek, California.
The flight distance (direct flight from Sioux Falls, SD to Walnut Creek, CA) is 1,378.01 mi.
1,724 mi = 1.61 kms