Idaho · Hiking · Frank Church-River of No Return Wilderness

Grass Ridge

12.5 mi
round trip
3,559 ft
climb
8,096 ft
high point
Out and back
route

Is Grass Ridge open right now?

Alert in the area

The Forest Service lists 4 alerts for Bitterroot National Forest.

As of · Source: USFS · Bitterroot National Forest. Agencies don't list every closure — check before you go.

Grass Ridge is a hard hike in Idaho's Frank Church-River of No Return Wilderness, on the West Fork Ranger District of the Bitterroot National Forest. The Forest Service manages the land, and the trail starts just 0.4 miles from the community of Upper Crossing. The route is out and back, covering about 12.5 miles with a one-way elevation gain of 3,559 feet. The climb starts from a low point of about 4,531 feet and reaches a high of about 8,096 feet. For a longer outing, the Selway River is about a mile away for paddling, and the Langdon Point and Grass-Lunch hikes lie within about 2 miles. For an overnight stay, Magruder Rangers House campground is about 4.5 miles off.

Route details

Distance
12.5 mi round trip
Climbing
About 3,559 ft
Summit
8,116 ft
Difficulty
Hard

Questions about this route

How long is the Grass Ridge on Hells Half Acre Mountain?

About 12.5 mi round trip.

How much elevation gain is on the Grass Ridge?

About 3,559 ft of climbing round trip.

How hard is the Grass Ridge?

It is rated hard.

Conditions and forecast on Hells Half Acre Mountain

Daily highs and lows, wind and the chance of precipitation at the summit and route start for the next 7 days, from the Open-Meteo model.