There are
1,621 mi
from Vacaville, CA to Yankton, SD
That's the driving distance. It would take 1 day 4 hours to go from Vacaville, California to Yankton, South Dakota.
The flight distance (direct flight from Vacaville, CA to Yankton, SD) is 1,321.80 mi.
1,621 mi = 1.61 kms