"Climbing" as it were in Missouri can not be compared to climbing in a place with proper mountains such as coast California, the Sierras or say, Austria or France.
The former has hills and hillocks, the other are actual mountains. I am certain there is nothing in Missouri that can compare to even a small climb in Italy like the Monte Corno let alone The Falkert See in Austria or even The Kootenay Pass in Canada. And those are are not that hard in the scheme of things.