I planned for 70-90 mile spacing, so I can't say right off if you can get good campsites at 60 mile spacing. There are more campsites available, but some just have a bathroom, and some have nothing at all besides a place to pitch a tent. Look at the website I listed in the first post. It has an option for listing all nearby camping options. The only place that really didn't work out for me was Sedalia because the fairgrounds' personnel locked the bathrooms at night. I don't know if that's a policy, or just a one-time screw-up.