Erosion Excursion

Total Miles


1904.04 ft


0.75 Hours

Technical Rating



Best Time

Spring, Summer, Fall

Trail Overview

This trail is very accurately described in its name. Lots of erosion, off-camber, and easy inclines. It's 4.8 miles through a beautiful healthy forest. You do hit a little patch of downed timber, but 80% of it is healthy. Our average speed was just under 5 mph, but not because of difficulty, just enjoying the view.


There are lots of erosion areas. You may encounter some mud puddles, but there are no running water crossings.

Technical Rating


Access Description

From Boulder, MT, take Highway 69 south towards Whitehall. Turn right on North Whitetail Road. You can stage in some of the wide turnout areas on the road, or at the top in the sagebrush flats. From North Whitetail Road (Highway 399), follow the trail map.