JH from Pacific, MO on 1/13/2023 6:20:38 AM:
Tent camping is inexpensive along the Katy. Free at the Clifton community center and city parks in Pilot Grove, Marthasville,Hartsburg and maybe others, The Turner Shelter in Tebbits asks for whatever you want to donate. Katy roundhouse campground is less than $10.
A few years ago I rode from D.C. to St Louis and after paying $35 to camp in an Ohio SP and $54 to camp in a KOA I started to look for cheap motels instead. SP's in Indiana were $35/night for camping too. Katy camping is way affordable.