Overview
The Highline Trail is one of Arizona's oldest established routes, used by 19th-century settlers to move along the base of the Mogollon Rim through what is now the Tonto National Forest. The 51-mile trail runs from Pine to Christopher Creek at elevations of 5,000 to 6,000 feet, and the section to Horton Springs is among its most accessible and rewarding segments.
At 5,000 feet in the ponderosa pine zone, this hike occupies a different temperature band than the Tonto's lower desert trails. Summer temperatures are manageable rather than dangerous, and the perennial spring at Horton Creek is an unusual destination in a forest where most water sources are seasonal. The ponderosa pine and Arizona sycamore forest along the route has a lush, shaded character that contrasts sharply with the desert terrain closer to Phoenix.
This trail is appropriate for the many hikers who want Tonto National Forest terrain without the demanding elevation changes and heat hazards of the lower-country routes. Many hikers carry 2 liters of water; the spring provides additional treated water; individual needs vary. The Tonto Pass ($8/day as of 2026) is required at the Highline Trailhead.
The Route
Miles 0 to 2.0: From the trailhead on AZ-260, the Highline Trail heads east through open ponderosa pine forest. The grade is gentle to moderate, staying consistent with the trail's original character as a practical travel route rather than a summit climb. The forest floor is open and views through the trees show the rim country above.
Miles 2.0 to 3.5: The trail works toward Horton Creek, entering the canyon corridor and dropping slightly to reach the creek bottom. Arizona sycamores appear in the drainage, their white bark and broad canopy providing distinctive shade. The creek begins to appear as the trail approaches Horton Springs.
Miles 3.0 to 3.5: Horton Springs emerges from the canyon wall into a pool shaded by sycamores. The spring is a reliable perennial water source and the most naturally cool spot on the route. The classic turnaround point for this day hike.
Miles 3.5 to 6.0 (return): Retrace the route back to the Highline Trailhead. The return is mostly flat to gently downhill.
When to Visit
April through November. This trail at 5,000 feet in the ponderosa zone offers a longer comfortable season than lower-elevation Tonto trails. May and June before monsoon season are particularly pleasant.
Monsoon season (July through September) brings afternoon thunderstorms. Start hikes early and watch for flash flood potential in the Horton Creek drainage. The creek runs higher after storms; check conditions before creek crossings.
Fall (September through October) is excellent: cooler temperatures, reduced crowds, and the beginning of fall color in the aspens along the Rim above.
What to Bring
- Water: many hikers carry 2 liters; treat spring water before drinking; individual needs vary
- Tonto Pass ($8/day as of 2026)
- Water filter or purification tablets for the spring
- Rain gear for afternoon monsoon storms
- Good trail shoes for the varied forest terrain
- Binoculars for birding along the creek corridor
For longer Highline Trail segments, review the national forest camping permit guide. Practice Leave No Trace 7 principles around the spring — concentrated water sources require careful waste management.
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.
Cell service is limited in the canyon. Download offline maps before leaving town.
Christopher Creek Campground, located nearby on AZ-260, provides a developed camping option with reservations available through Recreation.gov.
Getting There
From Payson: Take AZ-260 east approximately 17 miles to the Highline Trailhead. The trailhead is on the south side of the highway and well-signed. The paved lot is visible from the road.
From Show Low: Head west on AZ-260 approximately 65 miles to the Highline Trailhead.
Check current conditions with the Payson Ranger District. See checking conditions before you go for pre-trip resources including current fire restrictions and road status.