There are
2,123 mi
from Union City, CA to Algonquin, IL
That's the driving distance. It would take 1 day 12 hours to go from Union City, California to Algonquin, Illinois.
The flight distance (direct flight from Union City, CA to Algonquin, IL) is 1,805.15 mi.
2,123 mi = 3.22 kms