Gene Marshall-Piedra Blanca
Gene Marshall-Piedra Blanca Trail is a 18.6 miles trail in Los Padres 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 Sespe Wilderness.
Trail conditions, closures and hazards are not tracked here. The Los Padres 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 | 34.5603, -119.1649 · Directions ↗ |
| Other end | 34.6776, -119.3093 · 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 5 segments.
The trail
| Length | 18.6 miles |
| Trail class | 3, developed |
| Type | land trail |
| Surface | native material |
| Typical grade | 10-12 percent |
| Typical tread width | 18-24 inches |
| Motor vehicles | Closed to all motorized use year-round |
| Accessibility | Not evaluated |
| National designation | National Recreation Trail or other national designation |
| Trail numbers | 22W03 |
| Forest | Los Padres National Forest (unit 0507) |
| 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 year-round |
| Horse and pack stock | Allowed year-round |
| 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
- Sespe Wilderness WildernessFS · about 95% 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
No season published No overnight camping in trailhead area. Camping is only allowed in nearby Middle Lion or Rose Valley Campgrounds (both campgrounds are concession-managed for the Forest Service by the Parks Management Company). Reservations on weekends are recommended through www.recreation.gov . | 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. 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
Reference
Questions people ask
How long is the Gene Marshall-Piedra Blanca Trail?
18.6 miles, the sum of the 5 segments the Forest Service records under this name in Los Padres National Forest.
Source: Forest Service trail layer
What is allowed on the Gene Marshall-Piedra Blanca Trail?
hiking, horse and pack stock and mountain biking. The trail is closed to motor vehicles year-round.
Source: Forest Service trail layer
Where does the Gene Marshall-Piedra Blanca Trail start?
The line begins at 34.5603, -119.1649 and ends at 34.6776, -119.3093. The nearest recorded trailhead is Piedra Blanca Trailhead (Rose Valley Area) Ojai, 0.1 miles from the line. The record does not say which end is the usual start.
Source: Forest Service trail layer
Is the Gene Marshall-Piedra Blanca Trail in a wilderness area?
Yes. It enters Sespe Wilderness. Wilderness rules ban bicycles and motor vehicles and often limit group size.
Source: Sespe Wilderness Wilderness
Where can I camp near the Gene Marshall-Piedra Blanca Trail?
Reyes Creek Campground (0.3 mi), Middle Lion Campground (0.7 mi) and Reyes Peak Campground (1.7 mi) are within five miles of the trail. Site counts and booking links are on Campsite Atlas.
Source: Campsite Atlas
How developed is the Gene Marshall-Piedra Blanca 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 Gene Marshall-Piedra Blanca Trail?
The typical grade is 10-12 percent. The typical tread is 18-24 inches wide.
Source: Forest Service trail layer
Is the Gene Marshall-Piedra Blanca Trail a national trail?
Yes. The record marks it as a National Recreation Trail.
Source: Forest Service trail layer
Who manages the Gene Marshall-Piedra Blanca Trail?
Los Padres National Forest, Forest Service unit 0507. The trail is in California.
Source
This page is built from 5 segments named GENE MARSHALL-PIEDRA BLANCA in the Forest Service TrailNFS_Publish layer, administrative unit 0507. 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.