Overview
The Yankee Fork Historic Trail combines outdoor recreation with one of Idaho's most accessible windows into the 1870s gold rush era in Challis National Forest. The 6.0-mile out-and-back follows the Yankee Fork of the Salmon River past the ghost town site of Custer and extensive dredge tailings left by hydraulic gold mining operations.
The trail gains only 500 feet, making it one of the most accessible routes in the Challis area and a good choice for families or anyone wanting a lower-key day in the Idaho backcountry. The Custer Museum near the trailhead (open seasonally) provides context for the mining history visible along the route.
The Salmon River Corridor Trail offers a companion route along the main river for those wanting to extend their Challis area exploration.
The Route
From the Custer Museum trailhead, the trail follows the river upstream through stands of cottonwood and willow. The dredge tailings are immediately evident: long piles of river cobbles rearranged by dredging equipment now covered with grass and shrubs. Interpretive signs along the early sections explain the history.
The trail continues upstream past additional mining-era ruins before ending at a natural turnaround point. Return the same way.
When to Visit
May through October. The lower elevation makes this accessible earlier in spring than most Challis National Forest trails. Spring flows on the Yankee Fork are dramatic. Summer offers the best museum access and most comfortable hiking weather.
Practical Details
Vault toilet at the Custer Museum area. No fee. Dispersed camping is available on Challis National Forest lands. A valid Idaho fishing license is required to fish. Review checking conditions for road and seasonal access updates.
Getting There
From Challis, drive south on Highway 75 approximately 2 miles then turn east on Yankee Fork Road. Follow the paved and gravel road approximately 13 miles to the Custer Museum area.
Leave No Trace
This trail receives enough use that following Leave No Trace principles is important for preserving the experience for future visitors. Stay on the marked trail to prevent erosion. Pack out all waste. Avoid camping within 200 feet of water sources or the trail. Use existing fire rings only where campfires are permitted, and check current fire restrictions at checking conditions before you go before any visit. The trail and surrounding terrain remain in good condition because previous visitors have respected these norms.
Safety Considerations
The easy-moderate rating reflects the trail's general character under typical conditions. Weather, seasonal snow, and trail conditions can change the experience significantly. Carry the 10 Essentials on any full-day outing. Inform someone of your plans and expected return time before heading out, particularly on longer or more remote trails. Cell service varies throughout Challis National Forest and may be unreliable in canyon bottoms or remote terrain.