There are
2,061 mi
from Ukiah, CA to St Charles, MO
That's the driving distance. It would take 1 day 12 hours to go from Ukiah, California to St Charles, Missouri.
The flight distance (direct flight from Ukiah, CA to St Charles, MO) is 1,746.97 mi.
2,061 mi = 3,316.93 kms