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MONTANA 4x4 TRAIL GUIDE · MT-0014

Caruthers Lake

Dempsey Creek · Flint Creek Range · near Deer Lodge, Montana
6/10AGF Difficulty · Difficult
OUT & BACKAbout 5.6 miles
LEDGESRock, trees, creek
USFSPintler Ranger District (verify)
CHECK THE ROUTE AND THE APPROACH BEFORE YOU GO. No official map of motorized routes for the Flint Creek Range is posted online, so AGF has not confirmed that full-size vehicles may legally drive all the way to the lake. Call the Pintler Ranger District (406-859-3211) and stay on routes open to your vehicle; side routes such as Lower Elliot Lake and Mountain Ben Lake are reported as ATV-only. An older secondary source (SummitPost) says the lower approach crosses Montana State Prison ranch land: stay on the road, do not camp there, and leave gates as you find them. Current rules for crossing it are unverified; ask the Pintler Ranger District. The lake appears to have a privately owned irrigation dam; do not touch the dam or outlet works. Snow is possible at about 8,100 feet by October. Read Know Before You Go.
WHAT THIS GUIDE COVERS

Dempsey Creek to Caruthers Lake

The 4x4 climb up the Dempsey Creek drainage to Caruthers Lake, about 1,850 feet of gain (onX), as AGF ran it with the 406 Cruisers on July 18, 2026.

NOT INCLUDED: Lower Elliot Lake, Mountain Ben Lake and other side routes, and any travel beyond where the motorized route ends.
WHY 6/10

Difficult · Ledges and Trees

AGF rates a trail by its hardest unavoidable obstacle in normal dry conditions. Expect tight trees, large rocks, steep rocky grades and ledges (a 2-foot ledge near the top, per an onX user report on July 18, 2026), low-range crawling and a seasonal creek crossing deep enough to reach a Tacoma's frame on 33s (same report). Recent reports say it has become harder than older 4/10 descriptions.

Rock
5/5
Mud
2/5
Water
3/5
Exposure
3/5
Snow
5/5
Pinstriping
4/5

Snow, mud, runoff, deadfall and fire are condition changes, not part of the base rating.

ROUTE & MAP

Getting There

Official directions were not found. An older secondary source (SummitPost) describes it: from Deer Lodge, head south to Sager Lane and turn west, drive about 5 miles through the Montana State Prison ranch to Dempsey Creek, then take FR 8507 into the drainage. onX (secondary) starts the route near the FR 670 / 8507 junction. Roads are poorly marked and the numbers are unverified: carry a map and confirm with the Pintler Ranger District.

LOADING MAP…
Beaverhead-Deerlodge alerts →ROUTE FILE: not published yet

The pin marks Caruthers Lake (FWP/GNIS coordinate). Powell County has two lakes named Caruthers; this is the 8,100-foot lake above Dempsey Creek. No downloadable track is published.

VEHICLE FIT

Rig Requirements

Stock 4x4
No — stock clearance not recommended for full route
High clearance
Yes — required
Tires
33-inch recommended; 35 in preferred for margin
Rear locker
Recommended — not yet baseline-required
Front locker
No
Winch
Recommended — self-recovery prudent
Full-size
Limited — full-size possible with spotter
Body damage
Moderate risk

High-clearance 4x4 with good A/T or M/T tires; 33s are a sensible minimum and 35s help. Sliders, skids, a full-size spare, a saw and recovery gear are recommended. Tight trees and little turnaround room make long-wheelbase and full-size rigs vulnerable.

TRIP PLANNING

Know Before You Go

Season
Summer through fall; snow and runoff dependent; no official dates found, verify with Pintler RD
Typical trip
Half to full day; about 2–3 hours each way (onX report)
Camping
Lake-area camping reported; verify current rules
Trailer parking
Lower area reported; verify restrictions
Turnaround
Limited on upper route
  • Carry a saw: a club scout reported downed trees blocking the route in early July 2026 (IH8MUD).
  • Historic mining and homestead cabins line the route (onX). Do not enter them or remove anything.
  • Food storage order 02-00-22-02 applies Mar. 1–Dec. 1 on the Beaverhead-Deerlodge; hay or mulch must be certified weed-free (R1-2025-01).
  • All 2026 condition reports are secondary; nothing newer than July 18, 2026 was found.
SOURCES

Sources & Review

Last reviewed Oct. 8, 2026. No closure found. Whether full-size vehicles may legally reach the lake is unconfirmed (see the warning above). AGF last drove it on July 18, 2026.

AGF ratings describe normal, dry-condition difficulty. They do not mean a route is legal, open or passable today. Spot something out of date? Use the Contact page.