Evergreen Mountain Summit Loop is approximately 5.8 miles with shorter options available. Three Sisters Rocks approach is approximately 1.2 to 2 miles. The full park has approximately 14 miles of trails. Evergreen Mountain summit at 8,536 ft (highest point in park). Starting elevation from East Trailhead is approximately 7,700 ft. The park is also one of the best places near Denver for bouldering and informal rock climbing on the Sisters and Brothers formations. Wildlife is excellent: deer and elk are frequent sightings. Tip: The trail network is complex with many intersections, so download a trail map before you go or pick one up at the trailhead kiosk.