From the TH, climb past the gate to the T-intersection. The Ring the Peak (that's Pikes Peak) markers will be directly in front of you. Brown for CW; Green for CCW. This trail is for an out-and-back going CCW past the Raspberry Portal, and turning around about half way to the Horsethief Portal. (~9 miles out, and 9 back. Total distance for the entire ring is 63 miles.)
Mostly singletrack, with some dirt road near the beginning and in the middle. More climbing going out, which makes getting back easier. Some technical sections, some loose and sandy areas, a few switchbacks, a couple of small stream crossings, fantastic scenery.
URL for Ring the Peak is http://www.fotp.com/ringthepeak/index.html