There are
1,642 mi
from San Marcos, CA to Warrensburg, MO
That's the driving distance. It would take 1 day 5 hours to go from San Marcos, California to Warrensburg, Missouri.
The flight distance (direct flight from San Marcos, CA to Warrensburg, MO) is 1,362.41 mi.
1,642 mi = 1.61 kms