Miles between San Marcos, CA and Collinsville, IL

There are
1,865 mi
from San Marcos, CA to Collinsville, IL

That's the driving distance. It would take 1 day 8 hours to go from San Marcos, California to Collinsville, Illinois.

The flight distance (direct flight from San Marcos, CA to Collinsville, IL) is 1,562.06 mi.

1,865 mi = 1.61 kms