There are
711 mi
from San Marcos, CA to Cottonwood Heights, UT
That's the driving distance. It would take 12 hours 28 mins to go from San Marcos, California to Cottonwood Heights, Utah.
The flight distance (direct flight from San Marcos, CA to Cottonwood Heights, UT) is 594.18 mi.
711 mi = 1,144.51 kms