There are
2,074 mi
from Palo Alto, CA to Ballwin, MO
That's the driving distance. It would take 1 day 12 hours to go from Palo Alto, California to Ballwin, Missouri.
The flight distance (direct flight from Palo Alto, CA to Ballwin, MO) is 1,713.25 mi.
2,074 mi = 3,337.50 kms