Bitterroot National Forest

Magruder Corridor

The Magruder Corridor provides a unique opportunity to experience one of the most remote and undeveloped landscapes in the lower 48 states. This 95‑mile primitive road travels between the Bitterroot National Forest and the Nez Perce–Clearwater National Forests, offering outstanding views of the Bitterroot and Clearwater mountain ranges and access to a landscape largely unchanged since early travelers crossed this area.

Historically referred to as the southern Nez Perce Trail, the Elk City to Darby Road, and the Parker Trail, today’s route does not follow the exact historic alignment. Instead, the road traverses steep ridges and narrow valleys, reflecting the rugged terrain of the region. Motorists should expect slow travel, tight turns, and variable road conditions.

The corridor forms a boundary between two nationally significant wilderness areas: the 1.2‑million‑acre Selway‑Bitterroot Wilderness to the north and the 2.2‑million‑acre Frank Church–River of No Return Wilderness to the south. Together, these lands represent one of the largest continuous wilderness complexes in the contiguous United States.

Travelers should be prepared for a remote, challenging, and rewarding backcountry experience. The Magruder Corridor offers exceptional solitude, expansive scenery, and a rare opportunity to explore a landscape that retains its primitive character. Visitors are encouraged to plan ahead, allow ample time, and fully enjoy the remoteness and quiet this route provides.

Road Conditions & Information: This corridor's access is restricted due to snow. The road will be fully open dependent on weather and snowmelt. For more information, contact the West Fork Ranger District at 406-821-3269.

Nez Perce-Clearwater National Forest Magruder Corridor Information

Magruder Road Corridor - A guide to the historic Magruder Corridor

General Information

• Road Conditions: The Magruder Corridor is a narrow, winding, high elevation primitive road. Conditions can change quickly due to weather, falling trees, or washouts. High-clearance vehicles are strongly recommended, and trailers are not advised.

• Remote Setting: Services are extremely limited. There are no fuel stations, cell coverage is spotty to nonexistent, and emergency response may be delayed. Travelers should be self‑sufficient and prepared for extended travel times.

• Seasonal Access: Snow, downed trees, and lingering wet conditions often delay opening until mid‑ to late summer. Early winter storms can make the route impassable with little notice. Always check current conditions before departure.

• Navigation: Maps should be downloaded or carried in hard copy. GPS devices may be unreliable due to lack of signal and rugged terrain.

• Supplies: Carry extra fuel, water, food, and emergency gear. Ensure your vehicle is in good mechanical condition and bring tools appropriate for remote travel.

• Wilderness Adjacent: The road forms the boundary between the Selway‑Bitterroot Wilderness and the Frank Church–River of No Return Wilderness. Visitors should respect wilderness regulations and be aware that motorized and mechanized use is not permitted off the corridor.

• Wildlife Awareness: Black bears, grizzly bears, and other wildlife may be present. Store food securely and follow all guidance for recreating in bear country.

• Leave No Trace: Pack out all garbage, minimize campfire impacts, and stay on designated routes to protect this unique and undeveloped landscape.

Recreation Sites