There are
2,214 mi
from San Marcos, CA to Muskegon Heights, MI
That's the driving distance. It would take 1 day 15 hours to go from San Marcos, California to Muskegon Heights, Michigan.
The flight distance (direct flight from San Marcos, CA to Muskegon Heights, MI) is 1,804.91 mi.
2,214 mi = 3.22 kms