There are
709 mi
from San Marcos, CA to Midvale, UT
That's the driving distance. It would take 12 hours 25 mins to go from San Marcos, California to Midvale, Utah.
The flight distance (direct flight from San Marcos, CA to Midvale, UT) is 592.10 mi.
709 mi = 1,140.70 kms