Big Tire SM Loop
Big Tire SM Loop is a 15.9-mile snow trail in Gifford Pinchot National Forest, Washington. The Forest Service rates it trail class 4, highly developed. It is open to snowshoeing and cross-country skiing.
Trail conditions, closures and hazards are not tracked here. The Gifford Pinchot 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 end | 46.0566° N, 121.6286° W · Directions ↗ |
| Other end | 46.2004° N, 121.7232° 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
| Length | 15.9 miles |
| Trail class | 4, highly developed |
| Type | snow trail |
| Surface | snow |
| Typical grade | 12-20 percent |
| Typical tread width | 18-24 inches |
| Motor vehicles | Closed to all motorized use year-round |
| Accessibility | Not evaluated |
| Trail numbers | SNO-R8800 |
| Forest | Gifford Pinchot National Forest (unit 0603) |
| States | Washington |
| Detail published | management 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
Allowed uses
| Snowshoeing | Allowed year-round |
| Cross-country skiing | Allowed 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
Trailhead: Langfield Falls No season published | under 0.1 mi |
Trailhead: Forest Road 88 - Pacific Crest Trail No season published Pacific Crest Trail is closed to all motorized use and bicycles. | under 0.1 mi |
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.
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
- PrescribedCrazy Piles Rx - South
9 mi from the trail midpoint
- PrescribedNatural Bridges Pile Rx - South
12 mi from the trail midpoint · 155 acres
- PrescribedSpud Piles Rx - North
12 mi from the trail midpoint
- PrescribedRed Top Piles Rx - South
13 mi from the trail midpoint · 42 acres
Distance is to the reported incident point, not the fire edge. Closure orders are on the forest's official page.
Explore
Historic places nearby
Guidebooks for Washington
We earn a small commission if you buy through these links. It does not change what we list.
Titles come from Open Library's catalog, matched by subject heading or by title.
Reference
Questions people ask
How long is the Big Tire SM Loop?
The Forest Service records 15.9 miles under this name in Gifford Pinchot National Forest, the sum of 1 segment.
Source: Forest Service trail layer
What is allowed on the Big Tire SM Loop?
Snowshoeing and cross-country skiing are allowed. The trail is closed to motor vehicles year-round.
Source: Forest Service trail layer
Where does the Big Tire SM Loop start?
The line begins at 46.0566° N, 121.6286° W and ends at 46.2004° N, 121.7232° W. The nearest recorded trailhead is Trailhead: Langfield Falls, under 0.1 miles from the line. The record does not say which end is the usual start.
Source: Forest Service trail layer
Is the Big Tire SM Loop 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 Big Tire SM Loop?
Trout Lake Creek CG Gifford Pinchot NF (0.8 mi), Campground: Twin Falls (2.2 mi) and Cultus Creek CG Gifford Pinchot NF (2.9 mi) are within five miles of the trail. The camping section lists all 5 with site counts and booking links.
Source: Campsite Atlas
How developed is the Big Tire SM Loop?
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 Big Tire SM Loop?
The typical grade is 12-20 percent. The typical tread is 18-24 inches wide.
Source: Forest Service trail layer
Who manages the Big Tire SM Loop?
Gifford Pinchot National Forest, Forest Service unit 0603. The trail is in Washington.
Is there a fire near the Big Tire SM Loop?
The interagency feed shows 4 active incidents within 50 miles of the trail midpoint as of 2026-11-01, the nearest Crazy Piles Rx - South at 9 miles. Check the forest's closure orders before you go.
Source: Fire nearby
Source
This page is built from 1 segment named Big Tire SM Loop in the Forest Service TrailNFS_Publish layer, administrative unit 0603. 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.