Rode the first half of the Adventure Trail (10 miles in-10 miles out).  Trail is in great shape.  Technically - beginner but grunt factor of intermediate. There is lots of elevation gained and lost but all rideable and fun. The part I rode had some real trail, some road to trail that will seem all trail in a year or two, and some gravelly old roadbeds. A little like the CCC road but with lots of buff singletrack. All signed very well with trail junctions marked well and milepost signs throughout.  Next time I'll do the "40."