Blackstone/Grasmere Road

Scout Route
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In many ways, the Blackstone/Grasmere Road is three separate roads with a single designation. The northern 15 miles and the southern four miles are well-maintained gravel roads ranging from one to two lanes wide. These sections are easy to drive with almost any vehicle. At about 15 miles from the north end, the road suddenly becomes a marginally improved two-track with areas of loose rock, sharp rocks, rocks to crawl over, gullies to navigate, and washouts. This center section is moderately difficult and requires a high clearance vehicle with good tires. About four miles from the south end of the road turns back into a well-behaved two-lane gravel road.

The road parallels the Bruneau River Canyon for much of the northern section. Numerous side roads and trails end on the canyon rim, offering spectacular views of one of nature's greatest works. The side trail depicted requires only moderate ground clearance and ends at a three-way canyon intersection. It is one of the most magnificent and scenic places along the entire Bruneau River Canyon!

Some other side roads and trails are equally easy, while others require a more capable vehicle with significant ground clearance.

The Bruneau River Canyon is a Wilderness Area. The wilderness designation includes the bottom, the canyon walls, and a short distance past the top of the walls in most areas. At the canyon end of the side roads, a marker designates the start of the wilderness area. Markers may be damaged or missing. A good rule of thumb is to not drive near the edge to keep your vehicle out of the wilderness area.

All of the public land along the road is open for dispersed camping. The end of the side road depicted is one of several options for setting up overnight—but don't sleepwalk!

The north trailhead of the Blackstone/Grasmere Road is accessed off of Hot Springs Road south of Bruneau, Idaho. There is no sign designating the road's name. The south trailhead is on Highway 51 at mile marker 37. There is a sign identifying it as Blackstone Road.