Overview
Four Peaks is the most recognizable landmark on Phoenix's eastern skyline: four distinct quartzite summits rising above 7,000 feet from the desert basin, visible from most of the metro area on clear days. Reaching those summits means climbing 2,400 feet in 4 miles from a trailhead that itself sits at around 4,000 feet — a genuine commitment that separates Four Peaks from the many easier desert hikes closer to the city.
The Tonto National Forest manages the approach terrain, and the Four Peaks Wilderness protects the summit area. The trail is well-used but never feels crowded at the summit because the effort filters the casual visitor. Those who make it to the high point are rewarded with views that span the entire Phoenix metropolitan area to the west, Roosevelt Lake and the Salt River chain to the south, and the Mazatzal Wilderness extending north.
Heat is the primary planning consideration. The desert terrain below the summit ridge is genuinely dangerous in summer. Many desert hikers in Arizona carry 3-4 liters of water for a strenuous route like this; individual needs vary considerably with temperature and exertion level. October through May is the recommended season. The Tonto Pass ($8/day as of 2026) is required at the trailhead.
The Route
Miles 0 to 2.0: From the trailhead, the route climbs immediately through typical Sonoran Desert transition terrain: saguaro cactus, palo verde, and Arizona oak give way to chaparral and manzanita as elevation increases. The grade is steep from the start. Views of the desert basin below begin to open quickly.
Miles 2.0 to 3.5: The trail works up the south-facing slope toward the wilderness boundary. The terrain becomes more exposed and rocky. The chaparral vegetation grows denser and wind increases as the route gains the ridge. This section demands the most physical effort of the day.
Miles 3.5 to 4.0: The final approach to the summit area crosses into the Four Peaks Wilderness. The quartzite rock formations that give the peaks their distinctive appearance become dominant. The southernmost and most accessible of the four peaks delivers the full panoramic view: Phoenix's urban sprawl to the west, the blue water of Roosevelt Lake to the southeast, and the unbroken wilderness of the Mazatzal Mountains extending north.
Miles 4.0 to 8.0 (return): The descent retraces the route. Tired legs on rocky terrain require attention; most falls on this trail happen on the descent. Trekking poles provide significant stability benefit.
When to Visit
October through May. The shoulder seasons (October through November, March through May) are the sweet spots: temperatures are comfortable at all elevations and the desert flora is active. Spring (March through April) brings cactus flowering season to the lower slopes.
Winter (December through February) is viable with layered clothing; the summit can receive snow. Check conditions before winter visits and be prepared for ice on the rocky upper section.
Summer visits are possible with very early starts (pre-dawn departures) and adequate water, but the exposed terrain makes this a heat-illness risk that many experienced hikers decline. Check current heat advisories through checking conditions before you go.
What to Bring
- Water: many hikers carry 3-4 liters; no sources on route; individual needs vary and are higher in warm weather
- Trekking poles: strongly recommended for the rocky descent
- Tonto Pass: required ($8/day as of 2026); purchase before arriving
- Sun protection: extended time in exposed desert and summit terrain
- Rain gear: monsoon season thunderstorms can arrive rapidly
- Emergency nutrition: a strenuous 8-mile day requires substantial fuel
Review Leave No Trace 7 principles for wilderness area conduct. The summit terrain is fragile.
Practical Details
Tonto Pass required as of 2026. The America the Beautiful Pass does not substitute at most Tonto sites. Veterans should review veteran benefits in national forests for applicable programs.
The access road (Forest Road 143) is dirt and can be rough. High-clearance vehicles are recommended. The road can be impassable when wet.
No cell service at the trailhead or on trail. Inform someone of your route and return time.
Getting There
From Phoenix/Mesa: Take AZ-87 (Beeline Highway) north from Mesa approximately 25 miles to the Fountain Hills area. Turn east on FR 143 (Four Peaks Road) and follow approximately 20 miles to the trailhead. The last several miles are on rough dirt road.
From Roosevelt Lake: Take AZ-188 north to the FR 143 junction east of the lake. The four-wheel-drive approach from this direction is more demanding.
Verify current road conditions and Tonto Pass purchase locations before your trip.