Mill Creek
Mill Creek Trail is a 19.5 miles trail in Lassen National Forest, California. The Forest Service rates it trail class 3, developed. It is open to hiking, horse and pack stock and mountain biking. It enters Ishi Wilderness.
Trail conditions, closures and hazards are not tracked here. The Lassen 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 | 40.1995, -121.6710 · Directions ↗ |
| Other end | 40.1721, -121.8049 · 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 11 segments.
The trail
| Length | 19.5 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 | Not evaluated |
| Trail numbers | 410 |
| Forest | Lassen National Forest (unit 0506) |
| States | California |
| 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.
Allowed uses
| Hiking | Allowed 04/01 to 11/01 (month/day) |
| Horse and pack stock | Allowed 04/01 to 11/01 (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
- Ishi Wilderness WildernessFS · about 32% 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
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
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.
Explore
Park units nearby
Reference
Questions people ask
How long is the Mill Creek Trail?
19.5 miles, the sum of the 11 segments the Forest Service records under this name in Lassen National Forest.
Source: Forest Service trail layer
What is allowed on the Mill Creek Trail?
hiking, horse and pack stock and mountain biking. 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 Mill Creek Trail start?
The line begins at 40.1995, -121.6710 and ends at 40.1721, -121.8049. 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 Mill Creek Trail in a wilderness area?
Yes. It enters Ishi Wilderness. Wilderness rules ban bicycles and motor vehicles and often limit group size.
Source: Ishi Wilderness Wilderness
Where can I camp near the Mill Creek Trail?
Black Rock Campground (0 mi), Hole-In-The-Ground Campground (1.3 mi) and Potato Patch Campground (4.3 mi) are within five miles of the trail. Site counts and booking links are on Campsite Atlas.
Source: Campsite Atlas
How developed is the Mill Creek 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 Mill Creek Trail?
The typical grade is 12-20 percent. The typical tread is 18-24 inches wide.
Source: Forest Service trail layer
Who manages the Mill Creek Trail?
Lassen National Forest, Forest Service unit 0506. The trail is in California.
Source
This page is built from 11 segments named MILL CREEK in the Forest Service TrailNFS_Publish layer, administrative unit 0506. 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.