There are
1,825 mi
from San Marcos, CA to Wildwood, MO
That's the driving distance. It would take 1 day 7 hours to go from San Marcos, California to Wildwood, Missouri.
The flight distance (direct flight from San Marcos, CA to Wildwood, MO) is 1,525.02 mi.
1,825 mi = 1.61 kms