Miles between San Marcos, CA and Round Lake Beach, IL

There are
2,050 mi
from San Marcos, CA to Round Lake Beach, IL

That's the driving distance. It would take 1 day 12 hours to go from San Marcos, California to Round Lake Beach, Illinois.

The flight distance (direct flight from San Marcos, CA to Round Lake Beach, IL) is 1,700.99 mi.

2,050 mi = 3.22 kms