There are
1,747 mi
from St Joseph, MO to Petaluma, CA
That's the driving distance. It would take 1 day 5 hours to go from St Joseph, Missouri to Petaluma, California.
The flight distance (direct flight from St Joseph, MO to Petaluma, CA) is 1,490.59 mi.
1,747 mi = 1.61 kms