Overview
The Red Fir Ridge Trail in St. Joe National Forest climbs steadily from the river valley to a high ridge with commanding views over the St. Joe drainage and the surrounding mountains of northern Idaho. The forest transitions from dense cedar and hemlock at lower elevations to open subalpine fir stands near the ridgeline, eventually giving way to rocky meadows with July wildflower displays.
This 6.0-mile out-and-back is one of the more demanding trails in the forest but delivers proportional rewards. The exposed ridge offers sweeping views north toward the Clearwater Mountains and south over the layered ridges of the Bitterroot Range. Elk are frequently spotted grazing the open meadows below the ridge in early morning.
The Route
The trail begins at the Red Fir Ridge Trailhead and climbs immediately through dense forest, gaining elevation through a series of long switchbacks in the first two miles. The gradient moderates near the subalpine zone as the forest opens. The final mile traverses the ridge itself, crossing rocky outcrops with widening views before reaching the high point. The same route returns to the trailhead.
What to Expect
The upper ridge is exposed to afternoon thunderstorms common in July and August. Start early and plan to be below treeline by noon if clouds are building. The rocky terrain on the ridge requires attention on footing. Bring extra layers as the ridge can be significantly cooler and windier than the trailhead.
Nearby
The Huckleberry Trail offers a similar ridge experience from a different starting point. The St. Joe River Trail provides lower-elevation hiking along the river corridor as a contrast or a half-day alternative. The community of Avery is the nearest point for basic services before heading into the backcountry.
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 moderate-hard 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 St. Joe National Forest and may be unreliable in canyon bottoms or remote terrain.