Magruder Corridor Road North

United States Idaho Magruder Corridor Road North

30.6

PDI

13 mi

DISTANCE

4,479 ft

GAINED

ELEVATION GAINED

6.5 %

AVG. GRADE

AVG. GRADIENT

FULL CLIMB STATS

Page Contributor(s): Aaron Weinsheimer, Salida, CO; Jesse Crocker, Darby, MT; Keith Johnson, Browning, MT; Rob Adams, Boise, ID; Erin Huffstodt,

INTRO

Magruder Corridor Road North is a remote 13-mile gravel climb from the Selway River up into the Nez Perce National Forest, part of the historic 101-mile Magruder Corridor connecting the Selway-Bitterroot Wilderness to the north and the Frank Church-River of No Return Wilderness to the south. From the Selway River bridge at Magruder Crossing, the road climbs 4,479' at a 6.5% average grade, with pitches up to 11.9%, gaining nearly 4,500' before topping out on an unmarked high point at 8,183'. Much of the forest along this climb burned in past wildfires, giving the ride a stark, blackened-and-regrown beauty rather than dense timber.

About 4 miles from the top, a roadside marker recounts the 1863 Magruder Massacre - the murder of merchant Lloyd Magruder and four companions, for which the corridor is named. The real payoff comes about a mile from the summit: an observation point with some of the best wilderness views on the whole route, looking back east over the corridor.

This is one of the most isolated climbs in our database. There's no cell service, no services of any kind, and the nearest pavement is dozens of miles away in either direction. Come with full provisions, expect a rough, one-lane road, and check current Forest Service alerts before heading out - this area sees periodic wildfire closures and was under Stage 1 Fire Restrictions as of August 2026.

PLAN YOUR ROUTE

We've partnered with Sherpa-Map.com to bring you the best route planning tool. With a PRO Membership you can use this climb as a reference when creating your route.

This climb holds a 6.5% average across its 13 miles, but it's front-loaded: the steepest riding comes right at the start, with the opening quarter-mile averaging close to 12% and the first mile averaging over 10.6%. After that hard start the grade eases gradually - down to roughly 9% by mile 2.5, about 7.7% through mile 5, and settling into gentler, rolling grades the rest of the way to the 8,183' summit. Short pitches throughout still reach into the double digits, with ramps up to 11.9% at their steepest.

Roadway: The climb is entirely unpaved - a rough, single-lane Forest Service gravel/dirt road (FR 468, also called the Magruder Corridor, Nez Perce Trail Road, or Montana Road) with occasional rocky and washboarded sections. The Forest Service rates it passable for high-clearance vehicles, trucks, motorcycles, and mountain bikes. Much of the surrounding forest burned in past wildfires, so expect blackened snags and regrowth rather than continuous tree cover. This is wildfire country - the corridor has been closed by fire before (most recently the Magruder Ridge Fire in 2024), and the Nez Perce-Clearwater National Forest was under Stage 1 Fire Restrictions as of mid-August 2026. Check the Forest Service's current alerts and road status page before heading out, especially in late summer.

Traffic: Extremely light - this is one of the most remote, least-trafficked roads in our database. You may see an occasional high-clearance vehicle, ATV, or fellow adventure cyclist, but there's no through traffic of any real volume.

Parking: There's no formal trailhead lot. Riders typically start at the bridge over the Selway River adjacent to Magruder Crossing Campground, where there's room to park along the road. Reaching the start requires a long drive on unpaved forest roads - roughly 65 miles from Grangeville, ID via Highway 14 and Red River Road (FR 222) from the west, or about 20 miles of dirt plus 20 miles of paved road from the Darby, MT side to the east.

This is a gravel bike or mountain bike climb - wide, knobby tires and lower gearing help on the rougher, rockier stretches. Because the corridor is so remote (no cell service and no services of any kind for many miles in either direction), bring full provisions: extra water, food, a repair kit, and a way to call for help if something goes wrong. If you're driving in to ride, a high-clearance vehicle with 4x4 and a spare gas can are strongly advised for the approach roads.

Pack layers too - the summit sits above 8,000' and can be cold and windy even when it's hot down at the Selway River. Check out our Full Forecast tool for the weather at the summit before you go.

Before heading out on any cycling adventure check out our Things to Bring on a Cycling Trip and use our interactive check list to ensure you don't forget anything.

Magruder Corridor Road North sits deep in the Nez Perce National Forest, roughly equidistant from Grangeville, Idaho (via Elk City and Red River Road, about 65 miles) and Darby, Montana (via West Fork Road, about 40 miles). There's no lodging or services anywhere near the climb itself - Elk City, Idaho and Darby, Montana are the closest towns with gas, food, and a place to sleep, and both are still a long drive from the start on rough forest roads. Dispersed camping is available along the corridor at spots like Granite Springs and Poet Creek.

Because a full crossing of the Magruder Corridor takes 6-8 hours one-way, most visitors treat this as a multi-day trip with an overnight stay along the route rather than a there-and-back day ride.