There are
2,088 mi
from Ukiah, CA to Alton, IL
That's the driving distance. It would take 1 day 12 hours to go from Ukiah, California to Alton, Illinois.
The flight distance (direct flight from Ukiah, CA to Alton, IL) is 1,762.89 mi.
2,088 mi = 3,360.16 kms