Butler is a small Colorado company that specializes in creating backroad route guides for motorcyclists. Their goal is to identify the most satisfying roads to ride in a given region. So far, the company has maps covering paved roads in Colorado, Utah, Wyoming, Idaho, Montana, the Texas Hill Country, and Southern California. The selected roads are given a rating from 1 to 3, with 1 being the most sublime.
For dual sport riders, Butler is working with a group called Backcountry Discovery Routes. http://www.backcountrydiscoveryroutes.com/blog/ There are Backcountry Discovery Route maps for Washington state and Utah, with Colorado coming next year. Here's an 8 minute video that describes the Utah route. (The soundtrack is uninspired, in my view.)
The company web site has more information http://www.butlermaps.com
Butler also has a presence on ADV http://www.advrider.com/forums/showthread.php?t=598717