What is Shadow Mountain?
Shadow Mountain is the Phoenix Mountains Preserve hill that the preserve forgot. It rises to about 1,923 feet between Cactus Road and Greenway Road, east of Cave Creek Road, surrounded on every side by 1970s ranch houses, and the city has never built it a trailhead. What it has instead are two let-in points. The one the owner pinned as Park and Hike is the Acoma Drive access at 2601 E. Acoma Dr., a fenced gap between two homes with a wheelchair ramp; the other is at 13800 N. 28th St. The city lists two official trails: the Shadow Mountain Big Loop, 1.6 miles with about 260 feet of elevation change, and the Small Loop from 28th Street, 0.8 miles and 65 feet.
Neither official loop goes to the top. A narrower use path does, traversing the west slope to the main ridge, dropping to a saddle and finishing with a few feet of easy rock. One careful hiker measured it at 1.4 miles round trip and 430 feet of gain from Acoma Drive. Only a couple of junctions are signed, the tread is loose in places and the people you meet will mostly be neighbors walking dogs. From the top the view runs east across the north Valley to the McDowells and south over the whole grid of Phoenix.
If Lookout Mountain, a mile west, is the family hill, Shadow Mountain is the one you go to when you want to be left alone with a view. What you get is a real desert summit twenty minutes from Old Town with no crowd, no fee and no gate. What you do not get is a parking lot, a restroom, shade, a signed route to the top, or any guarantee that the neighbors will keep tolerating the cars.
How to hike Shadow Mountain right
Park like a guest. There is no lot. From Old Town take Loop 101 north to Cactus Road, go west about four miles to 26th Street, then north a few blocks to Acoma Drive; the let-in is on the north side of the street. Call it 20 minutes without traffic. Park on the curb, not across a driveway and not near the posted no-parking signs; this access survives only on the neighbors’ patience, and neighborhood access points get closed when they stop being patient. On a winter weekend you will find three or four other cars, never thirty.
Find the route. Follow the wide dirt path south to the drinking fountain and horse trough, the only amenities on the hill, then pick up the narrower path that climbs to the ridge. The Big Loop circles the mountain; the summit route traverses west, drops to a saddle and finishes with a few feet of easy scrambling. Only a couple of junctions are signed, so keep the houses below you in mind as a reference, retrace your line on the way down, and expect to improvise. For what the rock steps rate, see scramble and class ratings.
Fees and hours. Free. Trails are open 5 a.m. to 11 p.m. like the rest of the preserve system, and there is no gate to lock, so the hours are really about the neighbors.
Pick the season. The hill is low, south-facing and shadeless. October through April it is a pleasant hour at any time of day; from May through September it is a first-light hike and nothing else. The city’s extreme-heat closures do not apply here, which is not an invitation.
Water. None on the mountain beyond the fountain at the access. Carry a bottle even for the short loop; the rock radiates.
Dogs. Allowed on a six-foot leash, waste carried out. Phoenix city code bans dogs from every city trail once the temperature exceeds 100 degrees, and the summit rock holds heat long after sunset.
Bees. Beekeepers and hikers have both reported aggressive bees near the saddle. If they find you, walk away briskly without swatting.
Skip it if you want a built trail and a restroom. Lookout Mountain, a mile west, has both and a proper summit trail; Shaw Butte has the longer climb and the old restaurant ruin; Piestewa Peak is the workout and the crowd. Shadow Mountain is for the hour when all of those are full.
The preserve hill that never got a trailhead
The Phoenix Mountains are old and small: a line of worn knobs running from Camelback to Lookout Mountain whose oldest rock dates to the Proterozoic, nearly 1.7 billion years ago, with younger basalt and conglomerate laid over Lookout Mountain about 20 million years ago as the Basin and Range pulled the Valley apart. Shadow Mountain is one of the knobs. Below it the Hohokam ran the largest canal system in prehistoric North America for a thousand years and left shrines and rock art on the hills at the edge of their fields; the Phoenix Mountains were the dry northern rim of that world.
For most of the twentieth century the hills were simply desert north of town. Then Phoenix grew past them. After the war the city swept north along Cave Creek Road and Cactus Road, and by the 1960s ranch houses filled the flats around Shadow Mountain while Squaw Peak, now Piestewa, and North Mountain became county parks. The question of whether houses would climb the hills themselves is what produced the preserve. The Phoenix Mountains Preservation Council organized in August 1970, led by Dottie Gilbert and a handful of north Phoenix residents, to fight development on the peaks, and the city acquired most of the Phoenix Mountains Preserve in the early 1970s, buying hills that the subdivisions had already surrounded. Shadow Mountain came into the system that way, as a knob wrapped in houses with no spare lot for a parking area. The exact year of its purchase is not recorded on any page we could find; the council’s own histories describe the acquisitions in aggregate.
The protection hardened in 1985, when Phoenix voters wrote the preserves into the city charter as Chapter 26, which directs the city to keep them in their natural state and makes selling or developing preserve land a matter for the electorate. The Charles M. Christiansen Memorial Trail, the long route across the range, was dedicated in 1986 for the parks director who had carried the fight inside city hall. Shadow Mountain still had to defend itself once more: in 1988 neighbors and the council raised alarms over a plan by the Phoenix First Assembly of God church to build on the hill, and the record of that fight survives in a radio broadcast in the state archives. The hill stayed in the preserve, and the city never added anything to it. Lookout Mountain, a mile west, had room for a park at 16th Street and got a trailhead with a lot, restrooms and signed trails; Shadow Mountain got two fenced gaps between houses, a fountain, a horse trough and a page on the city website listing two loops.
That is the whole explanation for the odd experience of hiking here. The use path to the summit is not on the city map because the city never built it, and the street parking is limited because there was never anywhere else to put a car. The preserve saved the mountain; it did not furnish it.
Why it matters
Shadow Mountain is the Phoenix Mountains Preserve in its rawest form: a hill the city bought in the 1970s because it was about to be built on, protected by charter in 1985, and then left exactly as it was found, down to the gap in the fence. Scottsdale’s preserve was assembled from open desert with trailheads planned from the start; Phoenix’s was rescued peak by peak from inside its own subdivisions, and this is what rescue looks like without a budget for amenities. For a Scottsdale visitor the verdict is modest: it is a good quiet hour on a winter morning when the famous hills are jammed, twenty minutes away, free, with a summit view east to home. Park politely, carry water, keep the ridge in sight, and go to Lookout if you want a restroom.