There are
2,082 mi
from Napa, CA to Algonquin, IL
That's the driving distance. It would take 1 day 12 hours to go from Napa, California to Algonquin, Illinois.
The flight distance (direct flight from Napa, CA to Algonquin, IL) is 1,801.20 mi.
2,082 mi = 3.22 kms