Miller Rock can be accessed via the Ceran Saint Vrain Trail in Lyons, CO. This trail is a scenic hike that starts at the Ceran Saint Vrain Trailhead and follows a moderate 6.2-mile loop through the Roosevelt National Forest. The trail follows the Saint Vrain Creek and offers beautiful views of the surrounding mountains and valleys. The trail is well-marked and maintained, making it accessible for hikers of all skill levels. After about 3 miles on the Ceran Saint Vrain Trail, hikers reach a junction with the Miller Rock Trail. This trail branches off to the left and follows a steep ascent up to the Miller Rock formation. The trail is rocky and requires some scrambling, but the stunning views from the top are well worth the effort. Please note, the Miller Rock Trail is also a poplar route for off-highway vehicles (OHVs).