There are
1,960 mi
from Riverside, CA to Algonquin, IL
That's the driving distance. It would take 1 day 10 hours to go from Riverside, California to Algonquin, Illinois.
The flight distance (direct flight from Riverside, CA to Algonquin, IL) is 1,671.97 mi.
1,960 mi = 1.61 kms