UN 13,015 (formerly UN 13,020 interpolated) near Maroon Lake and Willow Pass has been determined to be no longer a ranked summit per Lidar evaluation, which gives it 292 ft. of prominence. This has reduced the total number of ranked 13ers from 584 to 583. We will be adjusting our list in the near future.
Drive west up I-70 from the Denver metro area and approximately 2.9 miles past the Bakerfield exit, turn off the interstate at Exit 218 and park at the Herman Gulch trailhead parking area on the north side of the highway. On weekends, this popular trailhead can be very crowded and a parking spot may come at a premium. Plan on early arrival. The two trails share a common start. Watch for the turnoff to Herman Gulch after about 1500 feet or five minutes of walking east on the trail. The junction is signed. Herman Gulch will head left. There is not a vault toilet at this trailhead but there are usually some porta-potties. There is no water available.
No designated camping is close by. You may be able to get away with sleeping in your vehicle in the parking lot if you can tolerate I-70 traffic roaring by all night. There are private residences on a road above the parking lot. If you really need a place to spend the night, drive back to the Bakerfield exit and you can locate a few spots near some designated parking on the south side of the highway, but I-70 noise will still make the night almost intolerable.
The other possibility is to backpack into the area around Herman Lake where you may be able to find some good camp spots on the tundra near the lake. Please respect Forest Service rules regarding how close to the lake you may camp.