California · Trail 9W17

Poison Glade

Poison Glade Trail is a 6.1 miles trail in Mendocino National Forest, California. The forest has not published allowed uses for it.

Trail conditions, closures and hazards are not tracked here. The Mendocino 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 end39.8123, -122.8027 · Directions ↗
Other end39.8225, -122.8770 · 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

Length6.1 miles
Typeland trail
AccessibilityNot evaluated
Trail numbers9W17
ForestMendocino National Forest (unit 0508)
StatesCalifornia
Detail publishedcenterline only

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

NOAA climate normals →
Weather by month near Poison Glade Trail40°50°60°70°80°January: 7.82 inches of precipitation, 0.7 inches of snowFebruary: 6.76 inches of precipitation, 1.4 inches of snowMarch: 5.19 inches of precipitation, 0.2 inches of snowApril: 2.81 inches of precipitation, 0.2 inches of snowMay: 1.64 inches of precipitation, 0.0 inches of snowJune: 0.76 inches of precipitation, 0.0 inches of snowJuly: 0.03 inches of precipitation, 0.0 inches of snowAugust: 0.16 inches of precipitation, 0.0 inches of snowSeptember: 0.20 inches of precipitation, 0.0 inches of snowOctober: 2.00 inches of precipitation, 0.0 inches of snowNovember: 4.28 inches of precipitation, 0.2 inches of snowDecember: 8.79 inches of precipitation, 0.6 inches of snowJanFebMarAprMayJunJulAugSepOctNovDecJanuary: 42.5°F averageFebruary: 45.3°F averageMarch: 49.0°F averageApril: 52.7°F averageMay: 59.2°F averageJune: 65.5°F averageJuly: 72.5°F averageAugust: 71.1°F averageSeptember: 66.4°F averageOctober: 57.2°F averageNovember: 46.8°F averageDecember: 41.2°F average0 in2 in4 in6 in8 in10 inTemp °FInches
The line is the average temperature and the bars are average precipitation at Covelo, 21 miles from the trail midpoint at 1,413 feet, station USC00042081 in the NOAA monthly climate normals for 1991 to 2020. Precipitation totals about 40 inches a year. The dotted line is average snowfall, about 3 inches a year on the same inches scale. The station sits about 2,700 feet lower than the trail midpoint, so temperatures on the ground run cooler.

Trailheads

Open May
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.

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

  • Wildfire
    Lucas

    42 mi from the trail midpoint · 1,099 acres

  • Wildfire
    Lucas

    42 mi from the trail midpoint · 4,128 acres · 67% contained

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

Limited data for this unit

Mendocino National Forest publishes this trail as a centerline only, with no class, surface or allowed uses. What is here is the name, the length and the line. The forest office has the rest.

Checked nightly. Sections appear as soon as the forest publishes more.

Reference

Questions people ask

How long is the Poison Glade Trail?

6.1 miles, the sum of the 1 segment the Forest Service records under this name in Mendocino National Forest.

Source: Forest Service trail layer

What is allowed on the Poison Glade Trail?

Mendocino National Forest has not published allowed uses for this trail. The forest office can say what is open.

Source: Mendocino National Forest official page

Where does the Poison Glade Trail start?

The line begins at 39.8123, -122.8027 and ends at 39.8225, -122.8770. The nearest recorded trailhead is Grindstone Trailhead, 0.1 miles from the line. The record does not say which end is the usual start.

Source: Forest Service trail layer

Is the Poison Glade 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 Poison Glade Trail?

General Campgrounds & Trailheads (2.8 mi), Sugar Spring Campground (3.3 mi) and Wells Cabin Campground (4 mi) are within five miles of the trail. Site counts and booking links are on Campsite Atlas.

Source: Campsite Atlas

Who manages the Poison Glade Trail?

Mendocino National Forest, Forest Service unit 0508. The trail is in California.

Source: Mendocino National Forest official page

Is there a fire near the Poison Glade Trail?

2 active incidents within 50 miles of the trail midpoint as of 2026-09-18, the nearest Lucas at 42 miles. Check the forest's closure orders before you go.

Source: Fire nearby

Source

This page is built from 1 segment named POISON GLADE in the Forest Service TrailNFS_Publish layer, administrative unit 0508. 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.