I headed out to ride this trail today. I reached it, and only the first 100 yards or so was truly passable. It's currently in a horrible state of disarray, with large trees down across it every couple of yards. It would take some major work to get this trail back up and running. If you are currently thinking about going out to ride it, don't bother. (Actual distance is unknown.)
Access this trail from the Montgomery Creek Loop http://www.singletracks.com/bike-trails/montgomery-creek-trail.html. It takes off to the north (outside) of the loop between the culverted creek crossing with the sink hole, and the major open stream crossing the with metal I beam across it.
http://www.singletracks.com/item.php?c=1&i=3638