Anonymous on 5/18/2023 12:47:04 PM:
From the Missouri DNR State Parks website:
Missouri State Parks does not provide camping along Katy Trail State Park. Camping is available at public and privately owned campgrounds adjacent to the trail. Click here for some options.
EXTENDED PARKING
If leaving a vehicle for an extended period of time at one of the trailheads or parking lots, contact the Katy Trail State Park office at 573-449-7402 and provide staff with the vehicle make, model and license plate number as well as contact information. Also include length of stay.
The "click here" link on the website directs to a list of available city parks, private campgrounds similar to what Jim mentioned.