Jackass Loop Trail (FS 264)

Total Miles


2072.45 ft



Technical Rating



Best Time


Trail Overview

Jackass Loop is a well-maintained two-way dirt road that crosses the Idaho-Wyoming state boundary in the Targhee National Forest. Running parallel to the Ashton-Flagg Ranch Road, the trail weaves through dense birch and pine trees that frequently give way to sprawling meadows and breath-taking views of the Teton Mountains. Scattered along the trail are multiple dispersed campsites and hiking trailheads that provide access to the Jedediah Smith Wilderness and Grand Teton National Park. The trail intersects multiple streams via single lane bridges and skirts the northern edge of lily-padded Ernest Lake. Drivers should remain alert and maintain a safe speed when transiting the trail due to free-range cattle and equestrian activity throughout the area. Due to heavy snowfall, this trail is best traveled between June and September.


Jackass Loop is a well-maintained two-way dirt road that can be easily traversed by stock 4WD and high-clearance 2WD vehicles during summer months.

Technical Rating


Access Description

Jackass Loop Trail can be accessed from both the east and west via the Ashton-Flagg Ranch Road.