There are
2,187 mi
from San Marcos, CA to Lexington, KY
That's the driving distance. It would take 1 day 14 hours to go from San Marcos, California to Lexington, Kentucky.
The flight distance (direct flight from San Marcos, CA to Lexington, KY) is 1,856.23 mi.
2,187 mi = 3.22 kms