There are
2,299 mi
from Farmington Hills, MI to San Marcos, CA
That's the driving distance. It would take 1 day 16 hours to go from Farmington Hills, Michigan to San Marcos, California.
The flight distance (direct flight from Farmington Hills, MI to San Marcos, CA) is 1,936.77 mi.
2,299 mi = 3.22 kms