This trail encompasses several trails including Burro Pass, Hazard County, and Porcupine Rim. You start out at 10000ft, and climb about another 1400 to Burro Pass, then the downhill insanity starts. Thru wooded forests, Aspen Pine lands, creeks, then down open prairie land and thru miles of technical really fast, crazy steep and slippery single track until you get to the Upper and lower Porcupine sections, then you finally end up at the Colorado River. This is the most technically diverse and by far the most fun ride I have ever done. I don't believe you could find one ride that has it all like this does.Took about 5 hours, but we stopped a lot for pictures, scenery, and just to in general take it all in. Amazing ride....
Take a shuttle to The Burro Pass trail, local Moab bike shops have the maps
http://www.singletracks.com/item.php?c=1&i=3427