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Summit

Mount Thomson

Washington

About

Mount Thomson is a summit of about 6,540 feet in King County, Washington, inside the Alpine Lakes Wilderness. The peak lies within the Snoqualmie Ranger District of Mt. Baker-Snoqualmie National Forest, which the Forest Service manages. The nearest town is Snoqualmie Pass, about 5.4 miles away. The Western Alpine Lakes climbing area is about a mile away, and Burnboot Creek offers canoeing at a similar distance. The Pacific Crest National Scenic Trail and the Goldmyer Hot Springs Trail both pass within about 1.6 miles.

Summit Facts

Summit elevation

6,540 ft

Land manager

Forest Service

Elevation from USGS 3D Elevation Program terrain data (about 10 m resolution).

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Location

Mount Thomson

Washington

Name and location: U.S. Geological Survey, Geographic Names Information System (GNIS). Elevation: USGS 3D Elevation Program. View the GNIS record.

Facts about this place

Where it is

Nearest town
Snoqualmie Pass, Washington · 5.4 mi
Managed by
Forest Service

Source: Wilderness.net boundaries; USFS EDW boundaries; USGS PAD-US 4.1; USGS GNIS populated places

Conditions

Active alerts for Snoqualmie Ranger District as of Oct 9, 2026:

Source: USFS forest alerts

Nearby

Source: Roamze catalog (indexable pages within 10 miles, PostGIS distance)

Is Mount Thomson open right now?

Closure in the area

There's a closure order in Mt. Baker-Snoqualmie National Forest. It doesn't name Mount Thomson, so check the source for the area it covers (3 listed).

As of · Source: USFS · Mt. Baker-Snoqualmie National Forest. Agencies don't list every closure — check before you go.