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Borah Peak Approach

Challis National Forest, Idaho · 3 min read

Distance
7 mi
Elevation Gain
5,262 ft
Difficulty
strenuous
Route Type
Out-And-Back
Best Season
July through September
Est. Time
6-10 hours
Dog Friendly
No
Kid Friendly
No
Difficulty Score
10 / 10

Trailhead Amenities

Restroom
Vault Toilet
Parking
Free
Cell Service
No Signal
Water
None
Camping
Dispersed
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Conditions, regulations, and fees change frequently. Verify with the local ranger district before your trip. Full disclaimer

At a Glance

  • Summit of Borah Peak at 12,662 feet, the highest point in Idaho
  • Chicken Out Ridge: a narrow Class 3 scramble that stops many hikers
  • Panoramic views of the Lost River Range and central Idaho
  • One of the most iconic summit hikes in the Intermountain West
  • Visible 1983 earthquake fault scarp near the trailhead
summitviews

Overview

Borah Peak stands at 12,662 feet as Idaho's highest point, and the approach from Challis National Forest is one of the most iconic summit challenges in the Intermountain West. The 7.0-mile out-and-back gains more than 5,200 feet, and the route includes Chicken Out Ridge, a narrow Class 3 scramble that stops a significant percentage of hikers short of the summit.

This is not a hike to take lightly. The elevation gain alone makes it one of the steepest non-technical climbs in Idaho, and Chicken Out Ridge adds genuine exposure and scrambling difficulty. Those who complete the summit experience some of the best views in the state: the Lost River Range, the Snake River Plain, and on clear days, peaks in multiple states.

A 1983 earthquake (magnitude 6.9) created a fault scarp near the trailhead that is visible and geologically significant; interpretive signs explain the event.

The Route

The trail starts at the base of the mountain and climbs aggressively through open sagebrush terrain. The first two miles gain roughly 3,000 feet through switchbacks on a wide, well-worn trail. Above treeline, the route narrows and the grade becomes extreme on the approach to Chicken Out Ridge.

Chicken Out Ridge at approximately 11,700 feet is the crux. The narrow ridge requires hands and feet with significant exposure on both sides. Beyond the ridge, the route continues to the summit on steep but less technical terrain.

When to Visit

July through September. Snow and ice can make Chicken Out Ridge dangerous outside this window. An early alpine start (before 6 AM) is advisable to avoid afternoon thunderstorms at altitude.

Practical Details

Vault toilet at the trailhead. No water on the route; carry at least 3 liters per person. The 10 Essentials are critical for this high-altitude, weather-exposed summit.

Getting There

From Mackay, Idaho, drive northwest on Highway 93 approximately 9 miles and turn left onto Birch Creek Road. Follow approximately 2 miles to the Borah Peak Trailhead. The road is gravel but passable for most passenger vehicles.

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.

Trailhead Parking

Borah Peak Trailhead off Birch Creek Road near Mackay. USFS maintained gravel lot with vault toilet. No fee.

← Back to Challis National Forest

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Frequently Asked Questions

How difficult is Borah Peak?
Borah Peak is considered one of Idaho's most strenuous day hikes. The 7-mile round trip gains over 5,200 feet and the route includes Chicken Out Ridge, a narrow Class 3 scramble with significant exposure. Many hikers turn around here.
What is Chicken Out Ridge on Borah Peak?
Chicken Out Ridge is a narrow, exposed scramble at approximately 11,700 feet. It requires Class 3 scrambling with significant drop-offs on both sides. It is not a technical climb but requires comfort with exposure.
Do dogs make it up Borah Peak?
The technical scrambling on Chicken Out Ridge and the extreme elevation gain make Borah Peak unsuitable for most dogs. Dogs are not recommended on this route.
When does Borah Peak typically clear of snow?
The approach trail is usually snow-free by early July. Chicken Out Ridge may retain ice and snow into mid-July in heavy snow years. Check conditions with the Challis Ranger District.