Lilly Basin
Lilly Basin Trail is an 11.5-mile trail in Gifford Pinchot National Forest, Washington. The Forest Service rates it trail class 3, developed. It is open to hiking, horse and pack stock and mountain biking. It enters Goat Rocks Wilderness.
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 | 46.5643° N, 121.6000° W · Directions ↗ |
| Other end | 46.4956° N, 121.4720° 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 2 segments.
The trail
| Length | 11.5 miles |
| Trail class | 3, developed |
| Type | land trail |
| Surface | native material |
| Typical grade | 12-20 percent |
| Typical tread width | 18-24 inches |
| Motor vehicles | Closed to all motorized use year-round |
| Accessibility | Evaluated and does not meet accessibility guidelines |
| Trail numbers | 86 |
| 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
| Hiking | Allowed year-round |
| Horse and pack stock | Allowed 05/01 to 10/31 (month/day) |
| Mountain biking | 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.
Wilderness
- Goat Rocks WildernessFS · about 96% of the line is insideWilderness Connect ↗
Inside a designated wilderness, bicycles and motor vehicles are prohibited by law regardless of the trail record, and permits or group limits may apply.
Trailheads
Trailhead: Lily Basin No season published Wilderness Regulations Apply within Goat Rocks Wilderness. | 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
- PrescribedPackwood Lake Piles Rx - North
5 mi from the trail midpoint
- PrescribedSpud Piles Rx - North
19 mi from the trail midpoint
- PrescribedHorse Piles Rx - North
21 mi from the trail midpoint
- PrescribedMoe Pile Rx - North
22 mi from the trail midpoint · 32 acres
Distance is to the reported incident point, not the fire edge. Closure orders are on the forest's official page.
Explore
Park units nearby
Historic places nearby
Guidebooks for Goat Rocks Wilderness and 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 Lilly Basin Trail?
The Forest Service records 11.5 miles under this name in Gifford Pinchot National Forest, the sum of 2 segments.
Source: Forest Service trail layer
What is allowed on the Lilly Basin Trail?
Hiking, horse and pack stock and mountain biking are allowed. The trail is closed to motor vehicles year-round. Some uses are seasonal. The allowed uses section lists the dates.
Source: Forest Service trail layer
Where does the Lilly Basin Trail start?
The line begins at 46.5643° N, 121.6000° W and ends at 46.4956° N, 121.4720° W. The nearest recorded trailhead is Trailhead: Lily Basin, 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 Lilly Basin Trail in a wilderness area?
Yes. It enters Goat Rocks Wilderness. Wilderness rules ban bicycles and motor vehicles and often limit group size.
Source: Goat Rocks Wilderness
Where can I camp near the Lilly Basin Trail?
Walupt Lake Campground (5 mi) is within five miles of the trail. The camping section lists it with site counts and booking links.
Source: Campsite Atlas
How developed is the Lilly Basin Trail?
Trail class 3, which the Forest Service describes as 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 Lilly Basin Trail?
The typical grade is 12-20 percent. The typical tread is 18-24 inches wide.
Source: Forest Service trail layer
Is the Lilly Basin Trail accessible?
No. The Forest Service evaluated it and found it does not meet its accessibility guidelines.
Source: Forest Service trail layer
Who manages the Lilly Basin Trail?
Gifford Pinchot National Forest, Forest Service unit 0603. The trail is in Washington.
Is there a fire near the Lilly Basin Trail?
The interagency feed shows 4 active incidents within 50 miles of the trail midpoint as of 2026-11-01, the nearest Packwood Lake Piles Rx - North at 5 miles. Check the forest's closure orders before you go.
Source: Fire nearby
Source
This page is built from 2 segments named Lilly Basin 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.