Arco Pass to Horsethief Spur #6

Total Miles


2,021.60 ft


0.5 Hours

Technical Rating



Best Time

Spring, Summer, Fall

Trail Overview

This 1.6-mile track takes you a little further into Horsethief Canyon and then down into Spur #6, deep in the Challis National Forest. Elk and deer are plentiful at different times of the year. The views are spectacular, and the scenery is beautiful. You can hike or ride all over this part of the National Forest.


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, go past the Iron Creek Spur, past the Horsethief Spur #5, to where this track starts.

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