Ask the locals, this is the best trail in the area. The devils backbone is beautiful enough, but there is much more to view. I've encountered rattlesnakes on the trail twice before, so they are out there. This trail area is three trails combined, the backbone, the wilds, and the hunters. Soon it will be connected to horsetooth and lory state park!!! Over 50 miles of trail. But for now the on the devils trail there is only one route for riders (the other is for hikers only), I recommed heading left when you reach the wilds loop, taking the stem (of the lollypop) out to the hunters trail and heading right on the pop. Either direction is fun on the wilds trail, but on the hunters if you go left, the rocks angle against you. There is very little shade on this trail.
Starting from Taft and Eisenhower (highway 43) head west on highway 34. The has 2 lanes in each direction, the road will go down to one lane in each direction. The trail head is just a few minutes from this point. You will see a coffee shop (The Black Cup) on the right, after this bend you will see an old water tower on the right with a road before it. Turn right on this dirt road and you will see the a large Devils Backbone trailhead sign.
http://www.singletracks.com/item.php?c=1&i=1040