Check the City of Phoenix's Sonoran Preserve page this week and you will see a banner most residents skim past on the way to the trail map. It reads, in full:
"Active until Sunday, August 9. For public safety, certain trails are restricted from 8 a.m. to 5 p.m."
If you live anywhere between Tramonto and Norterra and treat the preserve behind your subdivision as an extension of your morning routine, that sentence probably makes you pause. Certain trails. Which ones. Does that mean Apache Wash. Does it mean the loop you've run before work for three years.
It doesn't. And the reason it doesn't is worth understanding, because it changes how you plan the rest of this month, not just this weekend.
The Restricted List Is Three Places, Not a Citywide Shutdown
Phoenix's Trail Heat Safety Program does not close "the desert" when an Extreme Heat Warning is issued. It closes a short, specific list of named trails at three preserves, and none of them are in North Phoenix. When the National Weather Service issues an Extreme Heat Warning, the city restricts:
- Echo Canyon and Cholla Trail at Camelback Mountain Preserve
- The Piestewa Peak summit trail and its associated routes at Phoenix Mountains Preserve
- Holbert Trail, Mormon Trail, and Hau'pal Loop Trail at South Mountain Park and Preserve, plus access to the National Trail from the Pima Canyon Trailhead
That is the entire list. The Sonoran Preserve, the 9,600-acre network that sits behind North Phoenix neighborhoods from Desert Hills down through Norterra, doesn't appear on it at all.
The logic tracks once you look at what those three preserves have in common. Camelback's summit routes, Piestewa Peak, and the South Mountain access points named above are the Valley's busiest, most exposed climbs, the ones with the steepest elevation gain packed into the shortest distance and the least shade. They're also where most rescues happen. More than 200 hikers a year get pulled off Phoenix's desert and mountain parks by search and rescue crews, and the restricted list reads like a map of where those calls originate.
What's Actually Open at Apache Wash Right Now
Start from the Apache Wash Trailhead at 1600 E. Sonoran Desert Drive and every trail on the board is fair game this week, heat warning or not. That includes:
- Sidewinder Trail, the longest route in the preserve at 6.9 miles, built with mountain bikers in mind and threading east around Apache Hill before climbing toward the communication towers.
- Badger Brawl Trail, flat and shaded in patches, crossing several dry washes on its way toward Cliff Walk.
- Cliff Walk Trail, which follows the Cave Creek riverbed for its full length.
- Esplanade Trail, which meets Cliff Walk at the Carefree Highway bridge over Cave Creek on the west side of the preserve.
- East and West Skip Rimsza Paseo, paved and largely flat, the closest thing the preserve has to a sidewalk, and genuinely accessible for strollers, older knees, or anyone easing back into the habit.
None of that changes the fact that August in North Phoenix is still August. There's no potable water at Apache Wash, only vault toilets, so whatever you carry in is whatever you have. Parking and entrance gates run 5 a.m. to 7 p.m., trail hours run 5 a.m. to 11 p.m., and if you bring a dog, the practical rule locals use is simple: once the pavement or sand starts reading triple digits, the dog stays home.
Why the Numbers Back Up the Narrow List
It helps to know how often this comes up. In 2024, Phoenix logged 45 separate trail-closure days tied to Extreme Heat Warnings between May 1 and October 13, and 121 days that year reached 105 degrees or higher, with 69 of those topping 110. That is the backdrop the Heat Safety Program was built for, and it's also why the city didn't blanket every preserve with a restriction. A policy that closed all 36 miles of Sonoran Preserve trail every time a warning posted would shut down the paved, shaded, mostly flat Skip Rimsza Paseo for the exact same eight hours it closes the last mile of Echo Canyon, a route with essentially no shade and a rescue history that justifies the caution. The restriction is targeted at risk, not at geography for its own sake.
Camelback's Cholla Trail is a good example of how specific these calls get. On top of any heat-related restriction, Cholla is closed entirely for construction from August 17 through 28, with hikers routed to the Echo Canyon Trailhead instead. Two different closures, two different reasons, both nowhere near North Phoenix.
Timing This Week, and What Changes Once It Cools Off
For the next few days, the move is the same one longtime Apache Wash regulars already use: go before 8 a.m. or wait until the evening window before the 11 p.m. trail close. AllTrails data on the Apache Wash routes points to the same pattern every local already knows by feel, listing September through May as the better stretch for serious time on these trails, with the heart of summer reserved for early starts and short loops rather than long ones.
If you're newer to the neighborhood and looking at a map, one landmark deserves a quick correction before it causes confusion. Cave Buttes Recreation Area, the strip of land between the Sonoran Preserve's north and south units, is not open to the public despite the name. It now functions as flood control for Cave Creek. If you're hunting for it as a hiking destination, you're looking at the wrong feature on the map. Apache Wash, Desert Hills, and Desert Vista are the three actual trailheads serving the preserve.
Once the warnings start to space out and the mornings cool into the 70s, Deem Hills is worth adding to the rotation. It's a smaller preserve, just under 1,000 acres, known for basalt volcanic rock formations you won't find elsewhere in the Valley, and it draws a fraction of the crowd that Piestewa Peak or North Mountain pull on a Saturday.
None of this is a reason to get careless in the meantime. It's a reason to stop assuming the whole preserve is off limits when the real restriction is three specific climbs on the other side of town. Know which list your trail is actually on, carry more water than feels necessary, and the last stretch of summer in North Phoenix is manageable on foot, not just from a car window with the air conditioning running.
If you're weighing a move into one of these North Phoenix communities and want a read on which pocket puts a preserve trailhead closest to your back gate, that's the kind of neighborhood-level detail The Nelson Group SW works through with clients every week. Reach out and we'll walk you through it.
