Lacks an overview map showing the routes in relation to the state. Even with the poor Colorado map towards the front it's difficult to locate the routes. Dangerously out of date. For example, Rollins pass is impassible and has been so for years since the collapse of the Needle's Eye Tunnel. It's a nice drive nonetheless, but you're coming up from the west to the tunnel or the east to the tunnel and you're not making over the top from either direction. I don't mean challenging or not recommended, but literally impassible. The book leads you to believe you can get from Nederland to Winter Park, but that's wasn't going to happen even when this book was last printed. Can't vouch for all the other roads, but confirm before attempting them.