Ha, Marysvale on the Piute is about a hundred miles from my place. Utah is crazy ATV FRIENDLY!! One can ride off the trail in to nearly every rural town, and get gas, groceries, hamburgers or a room for the night. As long as you are not pulling wheelies or doing burnouts, you are WELCOME. Utah realized LOOONG ago, there is $ MONEY $ in off-road. There are thousands of miles to ride here...
As for Illinois...take no offence but I don't know how folks live in the Midwest. My working years got me there plenty, I couldn't wait to get back west...I worked with a guy in Iowa that was SO EXCITED the state had just built a new 100 acre off-road park in Ft. Dodge. Jeez, we use 100 acres to get'm warmed up.