Miles between San Marcos, CA and Union City, CA

There are
462 mi
from San Marcos, CA to Union City, CA

That's the driving distance. It would take 8 hours 42 mins to go from San Marcos, California to Union City, California.

The flight distance (direct flight from San Marcos, CA to Union City, CA) is 412.26 mi.

462 mi = 744.21 kms