Mt. Baker-Snoqualmie National Forest · Washington · Trail 109

Segelson Pass Snowmobile 18

Segelson Pass Snowmobile 18 Trail is a 27 miles snow trail in Mt. Baker-Snoqualmie National Forest, Washington. The Forest Service rates it trail class 4, highly developed. It is open to motorcycle, atv, e-bikes, snowmobile, snowshoeing and cross-country skiing.

Trail conditions, closures and hazards are not tracked here. The Mt. Baker-Snoqualmie 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 end48.2837, -121.7123 · Directions ↗
Other end48.3942, -121.8250 · 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

Length27 miles
Trail class4, highly developed
Typesnow trail
Surfacesnow
Typical grade12-20 percent
Typical tread width18-24 inches
Motor vehiclesOpen to at least one motorized use
AccessibilityNot evaluated
Trail numbers109
ForestMt. Baker-Snoqualmie National Forest (unit 0605)
StatesWashington
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.

Allowed uses

MotorcycleAllowed year-round
ATVAllowed year-round
E-bikesAllowed year-round
SnowmobileAllowed year-round
SnowshoeingAllowed year-round
Cross-country skiingAllowed 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.

Distance is from the point to the nearest part of the trail line. Season text is what the forest wrote and is often a season name rather than a date. The recreation page link goes to the Forest Service site, which may redirect to the forest's recreation index.

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.

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

  • Wildfire
    Electric

    26 mi from the trail midpoint · 495 acres · 90% contained

  • Wildfire
    Miners

    30 mi from the trail midpoint · 144 acres · 0% contained

  • Wildfire
    Gamma Creek

    32 mi from the trail midpoint · 29 acres

  • Wildfire
    Thunder Creek

    35 mi from the trail midpoint · 715 acres · 0% contained

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

Explore

Reference

Questions people ask

How long is the Segelson Pass Snowmobile 18 Trail?

27 miles, the sum of the 1 segment the Forest Service records under this name in Mt. Baker-Snoqualmie National Forest.

Source: Forest Service trail layer

What is allowed on the Segelson Pass Snowmobile 18 Trail?

motorcycle, atv, e-bikes, snowmobile, snowshoeing and cross-country skiing. The trail is open to at least one motorized use.

Source: Forest Service trail layer

Where does the Segelson Pass Snowmobile 18 Trail start?

The line begins at 48.2837, -121.7123 and ends at 48.3942, -121.8250. 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 Segelson Pass Snowmobile 18 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 Segelson Pass Snowmobile 18 Trail?

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.

Source: Mt. Baker-Snoqualmie National Forest official page

How developed is the Segelson Pass Snowmobile 18 Trail?

Trail class 4, which the Forest Service describes as highly 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 Segelson Pass Snowmobile 18 Trail?

The typical grade is 12-20 percent. The typical tread is 18-24 inches wide.

Source: Forest Service trail layer

Who manages the Segelson Pass Snowmobile 18 Trail?

Mt. Baker-Snoqualmie National Forest, Forest Service unit 0605. The trail is in Washington.

Source: Mt. Baker-Snoqualmie National Forest official page

Is there a fire near the Segelson Pass Snowmobile 18 Trail?

4 active incidents within 50 miles of the trail midpoint as of 2026-09-17, the nearest Electric at 26 miles. Check the forest's closure orders before you go.

Source: Fire nearby

Source

This page is built from 1 segment named SEGELSON PASS SNOWMOBILE 18 in the Forest Service TrailNFS_Publish layer, administrative unit 0605. 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 September 17, 2026. The methodology page explains how segments become trails.