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Routes
Hiking trails & Routes
United States
Idaho
Custer County

Mount Idaho Trail

Hard

2.7

(5)

96

hikers

Mount Idaho Trail

06:04

12.0km

1,470m

Hiking

Embark on the Mount Idaho Trail, a difficult 7.5 miles (12.0 km) hike that climbs 4839 feet (1475 metres) over an estimated 6 hours and 3 minutes. The route begins gently through sagebrush and forested areas, but soon turns into a steep ascent. You will encounter Class 3 scrambling, loose…

Last updated: April 23, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Borah Peak Wilderness Study Area

Salmon-Challis National Forest

Waypoints

A

Start point

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1

20 m

Mount Idaho Trailhead

Highlight • Trail

The trail up Mount Idaho is a class 3 scramble that can become a class 4 scramble in places if you don't have great route-finding skills. Remember to bring gloves …

Tip by

2

5.81 km

Mount Idaho

Highlight • Summit

Mount Idaho is the seventh highest peak in Idaho and one of the nine 12'ers. You will find spectacular views of Borah Peak to the north and Leatherman Peak to the south.

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B

12.0 km

End point

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Way Types & Surfaces

Way Types

12.0 km

< 100 m

Surfaces

12.0 km

< 100 m

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Elevation

Elevation

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Weather

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Today

Tuesday 2 June

17°C

1°C

0 %

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Max wind speed: 9.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

Where does the Mount Idaho Trail begin and is there parking available?

The trail officially starts at the Mount Idaho Trailhead. While specific parking details aren't provided, it's typical for remote mountain trailheads in the Lost River Range to have a designated, often unpaved, parking area. Always check local forest service websites for the most current access and parking information before you go.

What is the best time of year to hike this trail?

The best time to hike the Mount Idaho Trail is generally during the late summer and early fall, typically from July through September. This period offers the most favorable conditions, with less snow and more stable weather. Earlier in the season, you might encounter significant snowfields, especially at higher elevations, which can make route-finding and scrambling more challenging.

Is the Mount Idaho Trail dog-friendly?

Yes, the Mount Idaho Trail is located within the Borah Peak Wilderness Study Area, where dogs are generally permitted. However, given the trail's difficult nature, including steep sections, loose scree, and Class 3 scrambling, it may not be suitable for all dogs. Always keep your dog on a leash, especially in wilderness areas, and be prepared to pack out all waste. Ensure your dog is conditioned for such strenuous terrain and bring plenty of water for them.

Are there any permits or fees required to hike the Mount Idaho Trail?

As the Mount Idaho Trail is located within the Borah Peak Wilderness Study Area, there are typically no permits or entrance fees required for day hiking. However, it's always a good idea to check with the local Bureau of Land Management (BLM) or Forest Service office for any updated regulations or specific requirements before your trip, especially if you plan to camp overnight.

What is the terrain like on the way to Mount Idaho's summit?

The terrain is highly varied and challenging. It begins with a relatively defined path through sagebrush and juniper, potentially crossing a creek. As you ascend, it becomes significantly steeper, transitioning to tree-covered ridges. Route finding is a recurring challenge, with the trail often becoming faint, requiring navigation via cairns or bushwhacking. Higher up, you'll encounter basins, solid rock, loose scree, talus fields, and rock pillars requiring scrambling. The west face features a maze of scree chutes and rock ledges.

What kind of views can I expect along the route?

Hikers are rewarded with expansive and impressive views throughout the ascent and from the summit of Mount Idaho. You'll see Idaho's tallest mountain, Borah Peak, the beautiful Merriam Lake, and the vast expanse of the surrounding Lost River Range. The diverse landscape, from desert to alpine, offers constantly changing scenic vistas.

Is this trail suitable for beginners or families?

No, the Mount Idaho Trail is not suitable for beginners or young families. It is rated as difficult, involving significant elevation gain (over 1400 meters), steep pitches, loose rock, scree, and Class 3 scrambling, which requires using your hands for climbing. Route-finding can also be challenging. This trail is best attempted by experienced hikers with good physical conditioning and comfort with exposure and scrambling.

What should I wear and bring for this challenging hike?

Given the trail's difficulty and varied terrain, wear sturdy hiking boots with good ankle support and excellent grip. Dress in layers, as weather can change rapidly at elevation. Essential gear includes plenty of water (there's no reliable water source on the trail), high-energy snacks, a map and compass or GPS device, a headlamp, sun protection (hat, sunglasses, sunscreen), and a first-aid kit. Many hikers also recommend a helmet for protection against falling rocks and grippy gloves for better handholds during scrambling sections.

Are there any unique features or descent options on Mount Idaho?

Yes, the trail offers some memorable features. Beyond the challenging ascent, some hikers enjoy an "awesome scree slide" for a faster descent in certain sections. Another unique experience mentioned is a cool down-climb of a waterfall in a gully. These options can add to the adventure but require careful navigation and appropriate skills.

What are the winter conditions like on the Mount Idaho Trail?

Winter conditions on the Mount Idaho Trail are extremely challenging and generally not recommended for typical hiking. The trail would be covered in deep snow, making route-finding impossible without specialized winter navigation skills. Avalanche danger would be high, and temperatures would be severe. This trail is best reserved for experienced mountaineers with appropriate winter gear and training during the colder months.

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