Here is a sidecar rally that has been going for many years in Council Grove, KS (all motorcycles welcome). It will be at Council Grove Lake, Canning Creek Cove. The dates are Sep 8-11, 2022. (Google Map)
The details and registration information are on their flyer located on the Sidecar.com website.
Sidecar.com Joyce Canfields Sidecars in the Flints Hills