The first five and a half miles of this route follow the Colorado Trail. Find the signs that show you to the trail and head north for about a mile where the trail crosses the road (it's now called Deckers Road - either way, it's CR126).
Cross the road and go about 4.5 miles until you get to road 538. Pay Close Attention here. The Colorado Trail continues across the road, but don't follow it. Turn left on the forest road and go just under a tenth of a mile and look for the trail on your right. The trail, being seldom used, is a little hard to see. Look for a sign that says "No Motor Vehicles" and a little gap in the gate. This is the trail. Go up about Â¾ of a mile and reach the rocks.
Chair Rocks has got to be one of the great unsung heros of Front Range mountain biking. The tread is mostly smooth, if not a little loose in spots, the hills are gentle and the singletrack is seemingly endless as it winds its way in and out of the Buffalo Creek burn area, around, near and right up into some really groovy rock formations. There's great wildlife watching, flowers, expansive vistas, breathtaking valleys and hardly another human soul on the trail.
If you bring a camera, plan on adding at least an additional hour to your ride time and bring lots of film/card space. Also, bring a pair of walking shoes. You will want to walk around the rocks where your cleats can do a lot of damage. Awesome views of Raleigh Peak to the east, Long Scraggy Peak to the south and once you get up to the Chair Rocks, Banner Peak and the Cathedral Spires to the north.