There are
1,504 mi
from Ukiah, CA to Williston, ND
That's the driving distance. It would take 1 day 3 hours to go from Ukiah, California to Williston, North Dakota.
The flight distance (direct flight from Ukiah, CA to Williston, ND) is 1,154.91 mi.
1,504 mi = 2,420.09 kms