Arizona · Trail 121

Thompson

Thompson Trail is a 2.9-mile trail in Tonto National Forest, Arizona. The Forest Service rates it trail class 2, moderately developed. It is open to hiking, horse and pack stock and mountain biking.

Trail conditions, closures and hazards are not tracked here. The Tonto National Forest official page carries current alerts and closure orders.

Map

One end Other endLine simplified to about 100 metres. Basemap from the USGS National Map.

One end33.6728° N, 111.1526° W · Directions ↗
Other end33.6591° N, 111.1386° W · Directions ↗

The ends are the two ends of the longest connected chain of segments. The record does not say which is the usual start. The trail is recorded as 9 segments.

The trail

Length2.9 miles
Trail class2, moderately developed
Typeland trail
Surfacenative material
Typical grade0-5 percent, 5-8 percent, 8-10 percent
Typical tread width24-36 inches
Motor vehiclesClosed to all motorized use year-round
AccessibilityEvaluated and does not meet accessibility guidelines
National designationNational Scenic or Historic Trail
Trail numbers121
ForestTonto National Forest (unit 0312)
StatesArizona
Detail publishedmanagement level, with uses

Values are the set across all segments. Class 1 is minimally developed and class 5 is fully developed. Grade and width are the forest's typical values, not measured extremes.

Weather by month

NOAA climate normals →
Weather by month near Thompson Trail50°60°70°80°90°100°January: 2.21 inches of precipitationFebruary: 1.70 inches of precipitationMarch: 1.72 inches of precipitationApril: 0.58 inches of precipitationMay: 0.33 inches of precipitationJune: 0.13 inches of precipitationJuly: 1.57 inches of precipitationAugust: 2.10 inches of precipitationSeptember: 1.42 inches of precipitationOctober: 0.98 inches of precipitationNovember: 1.08 inches of precipitationDecember: 2.09 inches of precipitationJanFebMarAprMayJunJulAugSepOctNovDecJanuary: 50.3°F averageFebruary: 54.1°F averageMarch: 60.6°F averageApril: 68.1°F averageMay: 77.1°F averageJune: 87.2°F averageJuly: 90.9°F averageAugust: 89.2°F averageSeptember: 83.4°F averageOctober: 72.0°F averageNovember: 59.5°F averageDecember: 50.1°F average0 in0.5 in1 in1.5 in2 in2.5 inTemp °FInches
The line is the average temperature and the bars are average precipitation at Roosevelt 1 S, 2 miles from the trail midpoint at 2,605 feet, station USC00027281 in the NOAA monthly climate normals for 1991 to 2020. Precipitation totals about 16 inches a year.

Allowed uses

HikingAllowed year-round
Horse and pack stockAllowed
Mountain bikingAllowed year-round

A use is listed when the Forest Service records it as managed, accepted or discouraged on any segment. Discouraged still means legal. Uses marked restricted are left out. Where the forest publishes a Motor Vehicle Use Map, that map governs motorized use.

Trailheads

The Forest Service recreation layer records no trailhead within a third of a mile of this trail's line. Many trails start from a road pullout or another trail with no trailhead record. The forest's recreation pages list the trailheads it does publish.

Trails nearby

Camping nearby

Campsite Atlas cards carry site counts and booking links from Recreation.gov. Forest Service cards come from the recreation layer and link the agency page.

Fire nearby

  • Prescribed
    Rx Payson Pits Tnf0401P

    44 mi from the trail midpoint

  • Prescribed
    D2 Sinkhole Rx

    47 mi from the trail midpoint · 875 acres

Distance is to the reported incident point, not the fire edge. Closure orders are on the forest's official page.

Explore

Guidebooks for Tonto National Forest and Arizona

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Titles come from Open Library's catalog, matched by subject heading or by title.

Reference

Questions people ask

How long is the Thompson Trail?

The Forest Service records 2.9 miles under this name in Tonto National Forest, the sum of 9 segments.

Source: Forest Service trail layer

What is allowed on the Thompson Trail?

Hiking, horse and pack stock and mountain biking are allowed. The trail is closed to motor vehicles year-round.

Source: Forest Service trail layer

Where does the Thompson Trail start?

The line begins at 33.6728° N, 111.1526° W and ends at 33.6591° N, 111.1386° W. No Forest Service trailhead is recorded within a third of a mile of it. The record does not say which end is the usual start.

Source: Forest Service trail layer

Is the Thompson Trail in a wilderness area?

No. The trail line does not cross any polygon in the National Wilderness Preservation System layer.

Source: Wilderness Connect

Where can I camp near the Thompson Trail?

Frazier Horse Campground (0.4 mi), Frazier Group Campground (0.5 mi) and Windy Hill Campground (2.8 mi) are within five miles of the trail. The camping section lists all 4 with site counts and booking links.

Source: Campsite Atlas

How developed is the Thompson Trail?

Trail class 2, which the Forest Service describes as moderately developed. Class 1 is a minimal, unimproved route and class 5 is fully developed, often paved.

Source: Forest Service trail layer

How steep and how wide is the Thompson Trail?

The typical grade is 0-5 percent on most segments and 5-8 percent or 8-10 percent on others. The typical tread is 24-36 inches wide.

Source: Forest Service trail layer

Is the Thompson Trail accessible?

No. The Forest Service evaluated it and found it does not meet its accessibility guidelines.

Source: Forest Service trail layer

Is the Thompson Trail a national trail?

Yes. The record marks it as a National Scenic or Historic Trail.

Source: Forest Service trail layer

Who manages the Thompson Trail?

Tonto National Forest, Forest Service unit 0312. The trail is in Arizona.

Source: Tonto National Forest official page

Is there a fire near the Thompson Trail?

The interagency feed shows 2 active incidents within 50 miles of the trail midpoint as of 2026-11-01, the nearest Rx Payson Pits Tnf0401P at 44 miles. Check the forest's closure orders before you go.

Source: Fire nearby

Source

This page is built from 9 segments named Thompson in the Forest Service TrailNFS_Publish layer, administrative unit 0312. Wilderness overlap is tested against the National Wilderness Preservation System layer from Wilderness Connect. Trailheads and Forest Service campgrounds come from the Forest Service Recreation Opportunities layer. Data refreshed November 1, 2026. The methodology page explains how segments become trails.