comments:
lordpowpow posted on r/overlanding1w
Skip the apps and just buy this book. It's the offroad Bible for CO. You can get it for about $10 used on ebay and there are different versions depending on the area you are visiting. The East TN forest roads are comparable to the green trails in the book and the book gives recommendations on needed equipment (like a lift or skid/sliders) for every trail (plus pics, maps, highlights, etc.) Make sure you've got ATs.