There are
2,116 mi
from Santa Rosa, CA to Algonquin, IL
That's the driving distance. It would take 1 day 12 hours to go from Santa Rosa, California to Algonquin, Illinois.
The flight distance (direct flight from Santa Rosa, CA to Algonquin, IL) is 1,819.32 mi.
2,116 mi = 3.22 kms