There are
2,072 mi
from Waukegan, IL to San Marcos, CA
That's the driving distance. It would take 1 day 12 hours to go from Waukegan, Illinois to San Marcos, California.
The flight distance (direct flight from Waukegan, IL to San Marcos, CA) is 1,713.11 mi.
2,072 mi = 3.22 kms