There are
2,065 mi
from San Marcos, CA to Libertyville, IL
That's the driving distance. It would take 1 day 12 hours to go from San Marcos, California to Libertyville, Illinois.
The flight distance (direct flight from San Marcos, CA to Libertyville, IL) is 1,706.53 mi.
2,065 mi = 3.22 kms