There are
1,697 mi
from Ukiah, CA to Yankton, SD
That's the driving distance. It would take 1 day 6 hours to go from Ukiah, California to Yankton, South Dakota.
The flight distance (direct flight from Ukiah, CA to Yankton, SD) is 1,364.40 mi.
1,697 mi = 2,731.15 kms