Trillium Lake Loop
Trillium Lake Loop is a 1.8 miles trail in Mt. Hood National Forest, Oregon. The Forest Service rates it trail class 5, fully developed. The forest has not published allowed uses for it.
Trail conditions, closures and hazards are not tracked here. The Mt. Hood 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 | 45.2746, -121.7338 · Directions ↗ |
| Other end | 45.2746, -121.7338 · 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 | 1.8 miles, of which 1.8 miles evaluated accessible |
| Trail class | 5, fully developed |
| Type | land trail |
| Surface | native material |
| Typical grade | 12-20 percent |
| Typical tread width | 18-24 inches |
| Accessibility | At least one segment meets Forest Service accessibility guidelines |
| Trail numbers | 761 |
| Forest | Mt. Hood National Forest (unit 0606) |
| States | Oregon |
| Detail published | basic characteristics |
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
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.
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
- WildfireGrasshopper
11 mi from the trail midpoint · 93,996 acres · 98% contained
- WildfireThe Narrows
19 mi from the trail midpoint · 305 acres · 98% contained
- WildfireAustin
19 mi from the trail midpoint · 12,866 acres · 98% contained
- WildfireHigh Lava
46 mi from the trail midpoint · 2,899 acres · 80% contained
Distance is to the reported incident point, not the fire edge. Closure orders are on the forest's official page.
Explore
Reference
Questions people ask
How long is the Trillium Lake Loop?
1.8 miles, the sum of the 1 segment the Forest Service records under this name in Mt. Hood National Forest. 1.8 miles of that are evaluated as accessible.
Source: Forest Service trail layer
What is allowed on the Trillium Lake Loop?
Mt. Hood National Forest has not published allowed uses for this trail. The forest office can say what is open.
Where does the Trillium Lake Loop start?
The line begins at 45.2746, -121.7338 and ends at 45.2746, -121.7338. 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 Trillium Lake 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 Trillium Lake Loop?
Trillium (0.1 mi), Still Creek (1.7 mi) and Alpine Campground (3.4 mi) are within five miles of the trail. Site counts and booking links are on Campsite Atlas.
Source: Campsite Atlas
How developed is the Trillium Lake Loop?
Trail class 5, which the Forest Service describes as fully 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 Trillium Lake Loop?
The typical grade is 12-20 percent. The typical tread is 18-24 inches wide.
Source: Forest Service trail layer
Is the Trillium Lake Loop accessible?
The Forest Service has evaluated 1.8 miles of this trail as meeting its accessibility guidelines. The surface is native material.
Source: Forest Service trail layer
Who manages the Trillium Lake Loop?
Mt. Hood National Forest, Forest Service unit 0606. The trail is in Oregon.
Is there a fire near the Trillium Lake Loop?
4 active incidents within 50 miles of the trail midpoint as of 2026-09-18, the nearest Grasshopper at 11 miles. Check the forest's closure orders before you go.
Source: Fire nearby
Source
This page is built from 1 segment named TRILLIUM LAKE LOOP in the Forest Service TrailNFS_Publish layer, administrative unit 0606. 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.