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Phoenix Updates Trail Heat Safety Program Ahead of Summer: What You Need to Know
With summer just around the corner, the City of Phoenix Parks and Recreation Department is implementing the Parks and Recreation Board’s recent changes to the Trail Heat Safety Program to enhance the safety of both trail users and first responders during extreme heat. If you’re planning to visit Phoenix trails this summer, here’s everything you need to know about what’s changing—and what’s staying the same.
New Restrictions Coming to South Mountain Park/Preserve
Effective immediately, on days when the National Weather Service (NWS) issues an Extreme Heat Warning, three trails at South Mountain Park/Preserve will be restricted from 8 a.m. to 5 p.m. The affected trails are:
- Holbert Trail (2.56 miles)
- Mormon Trail (1.35 miles)
- Hau’pal Loop Trail (2.8 miles)
- Access to the National Trail from the Pima Canyon Trailhead
The National Trail will remain open when accessed from other trailheads, and all other trails at the Pima Canyon Trailhead will remain open.
In total, more than 100 miles of trails on South Mountain will remain accessible to hikers, with fewer than 7 miles subject to restrictions during Extreme Heat Warnings.
“These updates are about striking the right balance between public access and public safety,” said Cynthia Aguilar, Director of the Phoenix Parks and Recreation Department. “South Mountain is one of the largest urban parks in the country, and these changes help us minimize risk to hikers and first responders during extreme heat while keeping majority of the park accessible.”
No Changes at Camelback and Piestewa Trails
The current heat-related trail closures at Camelback Mountain (Echo Canyon and Cholla Trails) and Piestewa Peak Summit Trail will remain in place. These trails will continue to close from 8 a.m. to 5 p.m. on days when an Extreme Heat Warning has been issued.
Why It Matters.
In 2024, Phoenix had 45 days of trail closures between May and October due to excessive heat, with 121 days reaching at least 105°F and 69 of those days exceeding 110°F. These numbers reinforce the need for proactive safety measures.
High temperatures not only put hikers at risk of heat-related illness, but they also create dangerous conditions for first responders who conduct mountain rescues. The Trail Heat Safety Program helps reduce these emergencies by preventing hiking on the City’s most difficult trails during the hottest parts of the day.
“The safety of our community and our firefighters is our top priority. These trail restrictions are a proactive measure to help prevent heat-related emergencies and reduce the risk to both hikers and first responders during extreme conditions.” Executive Assistant Fire Chief Tim Kreis added. “We’re appreciative of the Parks Board’s decision that supports public safety.”
Public Input and Program Background
The Parks and Recreation Board held work study sessions to discuss the Trail Heat Safety Program during its regularly scheduled Board meetings in January and February 2025. On March 27, the Board approved the program update after public comment and careful review.
“The data is clear—extreme heat presents a serious risk to trail users,” said Kelly Dalton, Chair of the Phoenix Parks and Recreation Board. “These updates reflect our continued commitment to safety, while ensuring that the community can still enjoy our beautiful desert trails responsibly.”
The Trail Heat Safety Program was originally implemented in 2021 and has evolved to meet the needs of both hikers and emergency responders as Phoenix continues to experience record-breaking summer heat.
Take a Hike. Do it Right: Tips for Trail Users
Regardless of when you plan to visit Phoenix trails, it’s important to keep these safety tips in mind:
- Hike early – Hit the trails early before the heat ramps up.
- Hydrate, hydrate, hydrate – Always bring more water than you think you’ll need.
- Dress smart – Light-colored, moisture-wicking clothes and a wide-brim hat are helpful.
- Tell someone – Let a friend or family member know your route and when you plan to return.
- Know the signs – Dizziness, nausea, and confusion can signal heat exhaustion or heat stroke.
More Information
For real-time trail closure information and more details about the Trail Heat Safety Program, visit:
