There are
2,322 mi
from San Marcos, CA to Saginaw, MI
That's the driving distance. It would take 1 day 17 hours to go from San Marcos, California to Saginaw, Michigan.
The flight distance (direct flight from San Marcos, CA to Saginaw, MI) is 1,920.66 mi.
2,322 mi = 3.22 kms