There are
2,039 mi
from San Leandro, CA to St Peters, MO
That's the driving distance. It would take 1 day 11 hours to go from San Leandro, California to St Peters, Missouri.
The flight distance (direct flight from San Leandro, CA to St Peters, MO) is 1,704.96 mi.
2,039 mi = 3.22 kms