Washington · Trail 601

Thompson Ridge

Thompson Ridge Trail is an 11.5-mile trail in Okanogan-Wenatchee National Forest, Washington. The forest has not published allowed uses for it.

Trail conditions, closures and hazards are not tracked here. The Okanogan-Wenatchee 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 end48.4274° N, 120.2713° W · Directions ↗
Other end48.4482° N, 120.2713° 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

Length11.5 miles
Typeland trail
AccessibilityNot evaluated
Trail numbers601
ForestOkanogan-Wenatchee National Forest (unit 0617)
StatesWashington
Detail publishedcenterline only

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 Ridge Trail20°30°40°50°60°70°January: 2.06 inches of precipitation, 16.6 inches of snowFebruary: 1.28 inches of precipitation, 8.8 inches of snowMarch: 1.23 inches of precipitation, 3.4 inches of snowApril: 0.84 inches of precipitation, 0.1 inches of snowMay: 1.13 inches of precipitation, 0.0 inches of snowJune: 1.09 inches of precipitation, 0.0 inches of snowJuly: 0.69 inches of precipitation, 0.0 inches of snowAugust: 0.45 inches of precipitation, 0.0 inches of snowSeptember: 0.45 inches of precipitation, 0.0 inches of snowOctober: 1.37 inches of precipitation, 1.1 inches of snowNovember: 2.03 inches of precipitation, 7.6 inches of snowDecember: 2.57 inches of precipitation, 21.8 inches of snowJanFebMarAprMayJunJulAugSepOctNovDecJanuary: 22.6°F averageFebruary: 28.2°F averageMarch: 37.7°F averageApril: 46.7°F averageMay: 55.4°F averageJune: 61.3°F averageJuly: 68.3°F averageAugust: 67.5°F averageSeptember: 59.1°F averageOctober: 46.4°F averageNovember: 32.9°F averageDecember: 22.3°F average0 in5 in10 in15 in20 in25 inTemp °FInches
The line is the average temperature and the bars are average precipitation at Winthrop 1 WSW, 6 miles from the trail midpoint at 1,749 feet, station USC00459376 in the NOAA monthly climate normals for 1991 to 2020. Precipitation totals about 15 inches a year. The dotted line is average snowfall, about 59 inches a year on the same inches scale. The station sits about 3,200 feet lower than the trail midpoint, so temperatures on the ground run cooler.

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

No federal campground is recorded within five miles of the trail. Dispersed camping is allowed on most National Forest land outside posted closures. The forest office has the current rules.

Fire nearby

  • Wildfire
    Sisi

    25 mi from the trail midpoint · 4,816 acres · 40% contained

  • Prescribed
    Ton Rx - Mutton Hp

    27 mi from the trail midpoint · 358 acres

  • Wildfire
    Gamma Creek

    39 mi from the trail midpoint · 29 acres

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

Limited data for this unit

Okanogan-Wenatchee National Forest publishes this trail as a centerline only, with no class, surface or allowed uses. What is here is the name, the length and the line. The forest office has the rest.

Checked every Sunday. Sections appear on the first run after the forest publishes more.

Explore

Guidebooks for Washington

We earn a small commission if you buy through these links. It does not change what we list.

  • Backpacking Washington
    Douglas Lorain, 2020
    Find at Bookshop.org
  • Pacific Crest Trail: Oregon and Washington
    Andy Selters, 2019
    Find at Bookshop.org
  • Hiking Waterfalls in Washington
    Sawyer Scheer, 2019
    Find at Bookshop.org
  • Hiking Washington's Fire Lookouts
    Amber Casali, 2018
    Find at Bookshop.org
  • Hikes in the Washington Region Part C
    Larry Broadwell and William Needham, 2017
    Find at Bookshop.org

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

Reference

Questions people ask

How long is the Thompson Ridge Trail?

The Forest Service records 11.5 miles under this name in Okanogan-Wenatchee National Forest, the sum of 1 segment.

Source: Forest Service trail layer

What is allowed on the Thompson Ridge Trail?

Okanogan-Wenatchee National Forest has not published allowed uses for this trail. The forest office can say what is open.

Source: Okanogan-Wenatchee National Forest official page

Where does the Thompson Ridge Trail start?

The line begins at 48.4274° N, 120.2713° W and ends at 48.4482° N, 120.2713° 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 Ridge 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 Ridge Trail?

No federal campground is recorded within five miles of the trail. The camping section covers dispersed camping, which most National Forest land allows.

Source: Okanogan-Wenatchee National Forest official page

Who manages the Thompson Ridge Trail?

Okanogan-Wenatchee National Forest, Forest Service unit 0617. The trail is in Washington.

Source: Okanogan-Wenatchee National Forest official page

Is there a fire near the Thompson Ridge Trail?

The interagency feed shows 3 active incidents within 50 miles of the trail midpoint as of 2026-11-01, the nearest Sisi at 25 miles. Check the forest's closure orders before you go.

Source: Fire nearby

Source

This page is built from 1 segment named Thompson Ridge in the Forest Service TrailNFS_Publish layer, administrative unit 0617. 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.