Spar Benchmark

Elevation: 8,605 ft
Prominence: 825

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This peak is not in the book. Published June 2022.

It is almost universally true that if the USGS places a benchmark on a mountain peak that the views from that spot will be outstanding. Spar Benchmark proves this point. From its summit the expansive view includes the Lost River Range, the White Knob Mountains, the White Cloud Peaks, the Salmon River Mountains, the Lemhi Range, a sliver of the Beaverhead Range as well as many Boulder Mountain peaks. Spar Benchmark is located in the center of the northern Boulder Mountains due south of massive Lone Pine Peak. USGS The Paint Pot

Spar BM viewed from the north.


The Spar Canyon Road is the primary access for the Northern Boulder Mountain peaks. [(D)(1) page 243]  The Spar Canyon Road can be accessed from US-93 in the east or the East Fork Salmon River Road in the west. The road is maintained except during the winter. It is subject to occasional flash floods and can be difficult to drive when wet. All of the side roads departing from the Spar Canyon Road require high clearance vehicles and 4WDs are recommended.

To reach Spar Benchmark from US-93 follow the Spar Canyon Road west for 7.4 miles and turn left on to a two track that heads north up unnamed drainage. To reach this junction from the west follow the East Fork Salmon River Road south from ID-75 for 4.1 miles, turn left/east and follow the Spar Canyon Road east for 7.3 miles. Follow the two track south for 1.7 miles past an abandoned homestead. Turn right, cross the creek and follow this two track road west. This road leads toward Gossi Springs. Follow it for 1.9 miles to a large flat area at the base of the peak’s Northwest Rib passing one junction. Stay right. Do not take the left hand fork to Gossi Springs. Park at this point.

Northwest Rib, Class 2+

Spar Benchmark can be easily climbed from any direction. Ease of access is the determining factor that recommends choosing this route. From the parking area climb the peak’s broad Northwest Rib to the summit ridge. Follow the summit ridge west to the craggy summit. There are many ways to climb the boulder infested summit block. None of them are difficult.

Looking toward the summit from high on the peak’s northwest rib.

The summit of Spar BM.

This map shows the road approach from the Spar Canyon Road in red and the climbing route in blue. The route is 1.6 miles with 870 feet of elevation round trip.

Additional Resources

Mountain Range: Boulder Mountains

Year Climbed: 2022

Longitude: -114.1382   Latitude: 44.2382

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