There are
2,140 mi
from Ukiah, CA to Mokena, IL
That's the driving distance. It would take 1 day 13 hours to go from Ukiah, California to Mokena, Illinois.
The flight distance (direct flight from Ukiah, CA to Mokena, IL) is 1,854.35 mi.
2,140 mi = 3,444.33 kms