Slab Pile Road (1727)

Total Miles


2,211.44 ft


0.5 Hours

Technical Rating



Best Time

Spring, Summer, Fall

Trail Overview

This is a short side trail that leads to the 50-inch gate that you must traverse to get up to Two Tops. This road is not restricted and is a fun little adventure. You will travel along a tree-lined forest road. This is a two-lane maintained Forest Service road with a bathroom at the trail junction. There is also a view of the fantastic paved bike/hiking path that is being constructed over the popular trail that follows the South Fork Madison Road between Big Springs and West Yellowstone. This is a great option for those looking for an alternative adventure for the day.


This is a service road, so it is maintained on an "as-needed" basis. The road does have some rough areas with washes and rocks that could be an issue for lower-clearance vehicles. The Montana side is more accessible for lower-clearance vehicles. The Idaho side depends on the route taken. Those trying to follow the old railroad right of way will have issues as this becomes a more narrow route and there are some places where a vehicle wider than 70 inches may have challenges to navigate. Accessibility below is based upon coming in and returning to West Yellowstone. You can use Black Canyon Road to bypass these obstacles.

Technical Rating


Status Reports

There are no status reports yet for this trail.

Access Description

This trail is accessed via the South Fork Madison Road, which crosses Highway 20 just west of West Yellowstone. It can also be accessed from the Idaho side from the Big Springs area. The railroad right of way is somewhat narrow in areas and could be a challenge for vehicles over 70 inches wide. You can reach it via the Black Canyon Road and then the Continental Divide National Scenic Trail (20001).

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