Big Therriault Lake Loop

Montana

Montana

Free — you'll pick up right here.

2.8 mi

Distance

194 ft

Gain

1h 2m

Time

No verdict for this trail

We won't guess. Here is exactly what we do and don't know.

What we do know

  • Inside Kootenai National Forest

    2 managing-area boundaries mapped — agency alerts for them feed this page automatically.

    Boundary data

What's missing

  • No access route mapped

    We don't yet know which road reaches this trailhead, so we can't tell you if it's gated.

Nobody's filed a report here yet — be the first.

Why you'll love it

Out & back

Here's your day, mapped

Big Therriault Lake Loop

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Meals

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Elevation & route

Distance
2.8 mi
Elevation gain
194 ft
Highest point
5,713 ft
Lowest point
5,553 ft
More about this trail ↓

Photos

Directions & GPX

Get Directions to Trailhead Parking

Permits & access

Managing agency
Forest Service
Bikes
Allowed
Horses
Allowed
Surface
Natural

Source for bikes, horses, surface: USDA Forest Service National Forest System Trails (EDW)

About this trail

Big Therriault Lake Loop is a 2.81-mile out-and-back trail in Montana with 194 feet of elevation gain. The trail follows an out-and-back route around Big Therriault Lake.

Facts about this trail

The climb

High point
5,713 ft
Length (round trip)
2.8 mi
Shape
Out and back

Source: Roamze elevation profile and trail geometry (DEM samples along the mapped route)

Where it is

Managed by
Forest Service

Source: USFS EDW boundaries; USGS PAD-US 4.1

Conditions

Active alerts for Fortine Ranger District as of Oct 9, 2026:

Source: USFS forest alerts

Nearby

Source: Roamze catalog (indexable pages within 10 miles, PostGIS distance)

Add to a trip & share

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Guided trips nearby

Local operatorsoffering guided trips. You book directly with them — Roamze doesn’t take a cut.

Indian Springs Montana

Hiking business nearby (~8 mi away) — hasn't claimed their Roamze page yet

View operator