There are
1,836 mi
from Simi Valley, CA to Crestwood, MO
That's the driving distance. It would take 1 day 8 hours to go from Simi Valley, California to Crestwood, Missouri.
The flight distance (direct flight from Simi Valley, CA to Crestwood, MO) is 1,600 mi.
1,836 mi = 1.61 kms