ST. Mary Peak
ST. Mary Peak Trail is a 4.6 miles trail in Bitterroot National Forest, Montana. The Forest Service rates it trail class 3, developed. The forest has not published allowed uses for it. It enters Selway-Bitterroot Wilderness.
Trail conditions, closures and hazards are not tracked here. The Bitterroot 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 | 46.4958, -114.1952 · Directions ↗ |
| Other end | 46.5118, -114.2438 · 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 3 segments.
The trail
| Length | 4.6 miles |
| Trail class | 3, developed |
| Type | land trail |
| Surface | native material |
| Typical grade | 12-20 percent |
| Typical tread width | 18-24 inches |
| Accessibility | Not evaluated |
| Trail numbers | 116 |
| Forest | Bitterroot National Forest (unit 0103) |
| States | Montana |
| 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
Wilderness
- Selway-Bitterroot Wilderness WildernessFS · about 26% 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 · listed none | 0 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
No federal campground is recorded within five miles of the trail. Dispersed camping is allowed on most National Forest land outside posted closures. The forest office has the current rules.
Fire nearby
- WildfireNorth Fork Lost Horse
25 mi from the trail midpoint · 118 acres · 70% contained
- WildfireBlack Bear
28 mi from the trail midpoint · 2,126 acres · 80% contained
- WildfireNature Grove
28 mi from the trail midpoint · 1,422 acres · 0% contained
- WildfireBear Gulch
30 mi from the trail midpoint · 10 acres
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 ST. Mary Peak Trail?
4.6 miles, the sum of the 3 segments the Forest Service records under this name in Bitterroot National Forest.
Source: Forest Service trail layer
What is allowed on the ST. Mary Peak Trail?
Bitterroot National Forest has not published allowed uses for this trail. The forest office can say what is open.
Where does the ST. Mary Peak Trail start?
The line begins at 46.4958, -114.1952 and ends at 46.5118, -114.2438. The nearest recorded trailhead is St. Mary's Trailhead, 0 miles from the line. The record does not say which end is the usual start.
Source: Forest Service trail layer
Is the ST. Mary Peak Trail in a wilderness area?
Yes. It enters Selway-Bitterroot Wilderness. Wilderness rules ban bicycles and motor vehicles and often limit group size.
Where can I camp near the ST. Mary Peak Trail?
No federal campground is recorded within five miles of the trail. Dispersed camping is allowed on most National Forest land outside posted closures. The forest office has the current rules.
How developed is the ST. Mary Peak 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 ST. Mary Peak Trail?
The typical grade is 12-20 percent. The typical tread is 18-24 inches wide.
Source: Forest Service trail layer
Who manages the ST. Mary Peak Trail?
Bitterroot National Forest, Forest Service unit 0103. The trail is in Montana.
Is there a fire near the ST. Mary Peak Trail?
4 active incidents within 50 miles of the trail midpoint as of 2026-09-18, the nearest North Fork Lost Horse at 25 miles. Check the forest's closure orders before you go.
Source: Fire nearby
Source
This page is built from 3 segments named ST. MARY PEAK in the Forest Service TrailNFS_Publish layer, administrative unit 0103. 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.