There are
2,126 mi
from San Mateo, CA to Algonquin, IL
That's the driving distance. It would take 1 day 12 hours to go from San Mateo, California to Algonquin, Illinois.
The flight distance (direct flight from San Mateo, CA to Algonquin, IL) is 1,820.20 mi.
2,126 mi = 3.22 kms