What I would do is drive up to Colorado Springs, then go west, either by Manitou Springs and hike "The Incline" or go further northwest to Rampart Reservoir to fish and hike the lake. If you don't have time for a "serious" hike, Garden of the Gods is really cool. There was another spot that had "Red Rock" in the name, a little less developed parkish area that was pretty cool, too.
My daughter dragged me to each ... once. Years ago. I live in Oregon, not the right source for local directions.
Tom