Big Log Gulch
Big Log Gulch Trail is a 11.8 miles trail in Helena-Lewis and Clark National Forest, Montana. The Forest Service rates it trail class 3, developed. It is open to hiking, horse and pack stock and mountain biking. It enters Gates of the Mountains Wilderness.
Trail conditions, closures and hazards are not tracked here. The forest office carries current alerts and closure orders.
Map
One end Other endLine simplified to about 100 metres. Basemap from the USGS National Map.
| One end | 46.9049, -111.8137 · Directions ↗ |
| Other end | 46.7979, -111.8866 · 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 | 11.8 miles |
| Trail class | 3, developed |
| Type | land trail |
| Surface | native material |
| Typical tread width | 18-24 inches |
| Motor vehicles | Closed to all motorized use year-round |
| Accessibility | Evaluated and does not meet accessibility guidelines |
| Trail numbers | 252 |
| Forest | Helena-Lewis and Clark National Forest (unit 0115) |
| States | Montana |
| 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 06/01 to 11/30 (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
- Gates of the Mountains Wilderness WildernessFS · about 80% 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.
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.
Fire nearby
- PrescribedBear Gulch Rx
23 mi from the trail midpoint · 220 acres
- PrescribedJohnny Bonanza Rx
44 mi from the trail midpoint · 42 acres
Distance is to the reported incident point, not the fire edge. Closure orders are on the forest's official page.
Reference
Questions people ask
How long is the Big Log Gulch Trail?
11.8 miles, the sum of the 3 segments the Forest Service records under this name in Helena-Lewis and Clark National Forest.
Source: Forest Service trail layer
What is allowed on the Big Log Gulch 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 Big Log Gulch Trail start?
The line begins at 46.9049, -111.8137 and ends at 46.7979, -111.8866. 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 Big Log Gulch Trail in a wilderness area?
Yes. It enters Gates of the Mountains Wilderness. Wilderness rules ban bicycles and motor vehicles and often limit group size.
Where can I camp near the Big Log Gulch Trail?
White Sandy Campground (3.9 mi) is within five miles of the trail. Site counts and booking links are on Campsite Atlas.
Source: Campsite Atlas
How developed is the Big Log Gulch 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 Big Log Gulch Trail?
The typical tread is 18-24 inches wide.
Source: Forest Service trail layer
Is the Big Log Gulch Trail accessible?
No. The Forest Service evaluated it and found it does not meet its accessibility guidelines.
Source: Forest Service trail layer
Who manages the Big Log Gulch Trail?
Helena-Lewis and Clark National Forest, Forest Service unit 0115. The trail is in Montana.
Is there a fire near the Big Log Gulch Trail?
2 active incidents within 50 miles of the trail midpoint as of 2026-09-17, the nearest Bear Gulch Rx at 23 miles. Check the forest's closure orders before you go.
Source: Fire nearby
Source
This page is built from 3 segments named BIG LOG GULCH in the Forest Service TrailNFS_Publish layer, administrative unit 0115. 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.