Arco Pass to Horsethief Spur #3

Total Miles


1,919.18 ft


0.5 Hours

Technical Rating



Best Time

Spring, Summer, Fall

Trail Overview

This 3-mile track goes from Arco Pass to Hurst Canyon Trail further into the Challis National Forest. Opportunities to see wildlife increase the further into the National Forest you go. If you're here in the early spring, you will encounter snow and mud on these trails. On the north slopes, and in the trees, the snow may still be deep in mid-May, but the view is amazing.

Photos of Arco Pass to Horsethief Spur #3

Arco Pass to Horsethief Spur #3
Arco Pass to Horsethief Spur #3
Arco Pass to Horsethief Spur #3


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

There are no status reports yet for this trail.

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 this spur, which exits on the left.

Popular Trails