Via Cedar City and Duck Creek: the scenic one
248 miles, 4 hr 52 min. Off I-15 at Cedar City and straight up Cedar Canyon on Highway 14, over a 9,905-foot summit and across the top of the Markagunt Plateau through aspen and pine, past Navajo Lake and through Duck Creek Village. It is the only route that climbs into real mountains rather than skirting them, and the top can be 20 degrees cooler than Cedar City. We are biased, because we live on it, but the numbers are not: it costs nine minutes.