There are
1,827 mi
from Norwalk, CA to Lake St Louis, MO
That's the driving distance. It would take 1 day 7 hours to go from Norwalk, California to Lake St Louis, Missouri.
The flight distance (direct flight from Norwalk, CA to Lake St Louis, MO) is 1,549.79 mi.
1,827 mi = 1.61 kms