There are
2,298 mi
from San Marcos, CA to Farmington Hills, MI
That's the driving distance. It would take 1 day 16 hours to go from San Marcos, California to Farmington Hills, Michigan.
The flight distance (direct flight from San Marcos, CA to Farmington Hills, MI) is 1,936.77 mi.
2,298 mi = 3.22 kms