There are
1,715 mi
from Ukiah, CA to Vermillion, SD
That's the driving distance. It would take 1 day 6 hours to go from Ukiah, California to Vermillion, South Dakota.
The flight distance (direct flight from Ukiah, CA to Vermillion, SD) is 1,387.92 mi.
1,715 mi = 2,760.10 kms