There are
2,050 mi
from San Leandro, CA to Ballwin, MO
That's the driving distance. It would take 1 day 11 hours to go from San Leandro, California to Ballwin, Missouri.
The flight distance (direct flight from San Leandro, CA to Ballwin, MO) is 1,709.82 mi.
2,050 mi = 3.22 kms