Ninemile Divide
Ninemile Divide Trail is a 17.8-mile trail in Lolo National Forest, Montana. The Forest Service rates it trail class 3, developed. It is open to hiking, horse and pack stock, mountain biking and motorcycle.
Trail conditions, closures and hazards are not tracked here. The Lolo 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 | 47.0896° N, 114.5887° W · Directions ↗ |
| Other end | 47.2538° N, 114.7715° W · 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 | 17.8 miles |
| Trail class | 3, developed |
| Type | land trail |
| Surface | native material |
| Typical grade | 12-20 percent |
| Typical tread width | 18-24 inches |
| Motor vehicles | Open to at least one motorized use |
| Accessibility | Not evaluated |
| Trail numbers | 51 |
| Forest | Lolo National Forest (unit 0116) |
| 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.
Weather by month
Allowed uses
| Hiking | Allowed year-round |
| Horse and pack stock | Allowed |
| Mountain biking | Allowed year-round |
| Motorcycle | 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.
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.
Trails nearby
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
- PrescribedRx D7 Second Skinny S40 S51
2 mi from the trail midpoint · 111 acres
- PrescribedRx D4 Clearwater Crossing Admin
20 mi from the trail midpoint · 1 acre
- PrescribedRx D4 Sawmill Petty 931
21 mi from the trail midpoint
- PrescribedRx Pln Rocky Swamp
26 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
Historic places nearby
Guidebooks for Montana
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Titles come from Open Library's catalog, matched by subject heading or by title.
Reference
Questions people ask
How long is the Ninemile Divide Trail?
The Forest Service records 17.8 miles under this name in Lolo National Forest, the sum of 1 segment.
Source: Forest Service trail layer
What is allowed on the Ninemile Divide Trail?
Hiking, horse and pack stock, mountain biking and motorcycle are allowed. The trail is open to at least one motorized use.
Source: Forest Service trail layer
Where does the Ninemile Divide Trail start?
The line begins at 47.0896° N, 114.5887° W and ends at 47.2538° N, 114.7715° W. 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 Ninemile Divide 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 Ninemile Divide Trail?
Cascade Campground (4.4 mi) is within five miles of the trail. The camping section lists it with site counts and booking links.
Source: Campsite Atlas
How developed is the Ninemile Divide 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 Ninemile Divide Trail?
The typical grade is 12-20 percent. The typical tread is 18-24 inches wide.
Source: Forest Service trail layer
Who manages the Ninemile Divide Trail?
Lolo National Forest, Forest Service unit 0116. The trail is in Montana.
Is there a fire near the Ninemile Divide Trail?
The interagency feed shows 4 active incidents within 50 miles of the trail midpoint as of 2026-11-01, the nearest Rx D7 Second Skinny S40 S51 at 2 miles. Check the forest's closure orders before you go.
Source: Fire nearby
Source
This page is built from 1 segment named Ninemile Divide in the Forest Service TrailNFS_Publish layer, administrative unit 0116. 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 November 1, 2026. The methodology page explains how segments become trails.