There are
2,050 mi
from San Marcos, CA to Lincolnwood, IL
That's the driving distance. It would take 1 day 12 hours to go from San Marcos, California to Lincolnwood, Illinois.
The flight distance (direct flight from San Marcos, CA to Lincolnwood, IL) is 1,713.84 mi.
2,050 mi = 3.22 kms