Here's a couple of links that were shared with me when I was planning my '09 Colorado ride.
http://mycolorado.org/trails.html
http://www.traildamage.com/trails/index.php
They are written for jeeps but I found the information including maps, gps files and trail descriptions very good and relevant to motos as well.
So when you ask some of these crazy mofos where their 'easy' ride is going you'll have clue what kind of trouble they'll be getting into!

....if you've done your homework.