Arco Pass to Horsethief Spur #5

Total Miles


2,043.88 ft


0.5 Hours

Technical Rating



Best Time

Spring, Summer, Fall

Trail Overview

This 2-mile track takes you deeper into Horsethief Canyon and out Spur #5. You are at about 6700 feet in the Challis National Forest, where the opportunities for wildlife viewing are abundant. This is an easy track unless you're here in the early springtime before the snow melts or here after heavy rain. The trails in this area are subject to erosion from runoff.

Photos of Arco Pass to Horsethief Spur #5

Arco Pass to Horsethief Spur #5
Arco Pass to Horsethief Spur #5
Arco Pass to Horsethief Spur #5


Easy riding unless it's early spring or after a heavy rain. Snow may be present, and erosion happens in places with run-off.


The Shoshone Indians first called this area home, as did the Blackfoot Indians. Fur trappers working for the North West Company and Hudson's Bay Company led trappers and explorers here in the early 1800s. Hudson Bay Company's last expedition between 1830 and 1832 found the beaver population so eradicated by earlier trappers that they abandoned trapping in this area. The Lost River Valley from Arco to Mackay is rich in mining history, and there is a wonderful museum in Mackay.

Technical Rating


Status Reports

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Access Description

From South Front Street (Highway 20) in Arco, take Highway Drive to where the Arco Pass to Hurst Canyon track begins. You can stage in Arco, or you can stage at the beginning of the Arco Pass to Hurst Canyon track. Follow the Hurst Canyon track to the Horsethief Spur #3 track. Instead of turning left into Spur #3, go straight up Horsethief Canyon, and go past the Iron Creek Spur, to where this track starts.

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