There are
2,055 mi
from Vacaville, CA to Algonquin, IL
That's the driving distance. It would take 1 day 11 hours to go from Vacaville, California to Algonquin, Illinois.
The flight distance (direct flight from Vacaville, CA to Algonquin, IL) is 1,784.11 mi.
2,055 mi = 3.22 kms