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Routes
Hiking trails & Routes
United States
Idaho
Idaho County

Grass Ridge Trail

Hard

4.7

(8499)

19,632

hikers

Grass Ridge Trail

06:57

20.2km

1,100m

Hiking

Hike the difficult 12.5-mile Grass Ridge Trail in Frank Church-River of No Return Wilderness, gaining 3609 feet with Selway River views.

Last updated: February 26, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Frank Church-River of No Return Wilderness

Bitterroot National Forest

Waypoints

A

Start point

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1

10.0 km

View of the Selway River

Highlight • Viewpoint

Enjoy the Grass Ridge Trail as you navigate down to the Selway River. The trail has a lot of tree coverage and you can take a dip in the river …

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B

20.2 km

End point

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Way Types & Surfaces

Way Types

20.2 km

< 100 m

Surfaces

20.2 km

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

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Weather

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Today

Monday 1 June

14°C

0°C

41 %

Additional weather tips

Max wind speed: 16.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

How long does it typically take to hike the Grass Ridge Trail?

The Grass Ridge Trail is a challenging hike covering over 20 kilometers. Hikers should plan for approximately 7 hours to complete the route, depending on their pace and stops.

What is the difficulty level and terrain like on this trail?

This trail is rated as difficult. Given its location within the Frank Church-River of No Return Wilderness, you can expect rugged and untamed terrain, typical of a remote wilderness experience. Prepare for significant elevation changes and potentially uneven surfaces.

What are the main points of interest along the route?

A significant highlight along the route is the View of the Selway River. This offers a stunning vista of the river winding through the wilderness.

Does the Grass Ridge Trail intersect with any other trails?

Yes, the route primarily follows the Grass Ridge Trail for its entire length. It also includes a section of the Selway River Trail, making up about 7% of the total distance.

Is the Grass Ridge Trail dog-friendly?

Regulations for dogs in the Frank Church-River of No Return Wilderness can vary. Generally, dogs are permitted on trails but must be kept on a leash to protect wildlife and ensure a pleasant experience for all users. Always check the latest wilderness area rules before you go.

Do I need a permit or pay an entrance fee to hike the Grass Ridge Trail?

The Frank Church-River of No Return Wilderness, where this trail is located, typically does not require permits for day hiking. However, permits may be necessary for overnight stays or specific activities. It's always best to check with the local Forest Service office for the most current regulations before your trip.

When is the best time of year to hike the Grass Ridge Trail?

Given its wilderness location and challenging nature, the best time to hike is generally during the warmer, drier months, typically late spring through early fall. This avoids snow and ice, which can make the trail impassable or significantly more difficult. Always check weather and trail conditions before heading out.

What kind of wildlife might I encounter on the trail?

As the trail is in a vast wilderness area, you have the potential to see a variety of wildlife. Common sightings in such regions can include deer, elk, various bird species, and potentially larger mammals like bears or mountain lions. Always practice Leave No Trace principles and be aware of your surroundings.

Where can I access the trailhead for the Grass Ridge Trail?

Specific trailhead access points for remote wilderness trails like the Grass Ridge Trail can sometimes be challenging to find. It is located within the Frank Church-River of No Return Wilderness. We recommend consulting detailed topographical maps or contacting the local Forest Service district for precise trailhead locations and parking information.

What should I bring for a hike on the Grass Ridge Trail?

For a difficult, 7-hour wilderness hike, essential gear includes plenty of water, high-energy snacks, sturdy hiking boots, navigation tools (map, compass, GPS), appropriate layers of clothing for changing weather, rain gear, a first-aid kit, and sun protection. Given the remote nature, consider bringing a headlamp and emergency supplies.

Is the Grass Ridge Trail suitable for families or beginners?

No, due to its 'difficult' rating, significant distance (over 20 km), and substantial elevation gain (nearly 1100 meters), the Grass Ridge Trail is not recommended for beginners or young families. It is best suited for experienced hikers who are well-prepared for a strenuous wilderness adventure.

Nearby routes

Hard

1

Selway River Trail

07:41h

28.6km

350m

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