There are
2,460 mi
from Vacaville, CA to Ironton, OH
That's the driving distance. It would take 1 day 18 hours to go from Vacaville, California to Ironton, Ohio.
The flight distance (direct flight from Vacaville, CA to Ironton, OH) is 2,110.39 mi.
2,460 mi = 3.22 kms