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Grandmother and Grandfather Mountains route map
DifficultOut and Back

Grandmother and Grandfather Mountains

Clarkia, Idaho

8.3 mi

Distance

2,146 ft

Elev. Gain

Out & Back

Route Type

Difficult

Difficulty

About This Trail

Imported description
This route starts at Freezeout Saddle on Forest Service Road #301. Most cars can make it to the trailhead, but be careful as the road gets rough during the last mile or two. The Marble Divide Trail #275 begins on the slopes of Mark's Butte with open views of the valley 3000 feet below. It then enters the forest and descends to a small saddle before making the 700 foot climb up to the summit of Grandmother Mountain. Be sure to keep right at the intersection with the Gold Fork Trail and then keep left at the intersection with the Marble Creek Trail. At this point, the slope steepens and the trail emerges into a beautiful alpine meadow. Rocky cliffs provide clear views over Clarkia and the St. Maries River on the left. On the right, you'll find the headwaters of Marble Creek with the bald Lookout Mountain rising up behind. A rock outcropping 3/4 of the way up the climb makes for a great spot to take a rest. Once at the top of the ridge, a short 0.2 mile spur leads through an old-growth forest of Mountain Hemlock to the summit of Grandmother Mountain. On a clear day, the views over Marble Creek and the St. Joe River drainage are nothing short of spectacular. Turning back from here will provide you with a 5 mile hike. For a longer 8-mile option, continue right on the Marble Divide Trail #275 as the trail descends into a shallow saddle, cloaked in a mix of old growth and newer recovered forest. The trail then makes one more climb up to the summit of Grandfather Mountain. The views on Grandfather Mountain aren't quite as open and great as they are on Grandmother, but the extra distance isn't very difficult and is still worth the trip. There is a backcountry campsite and a spring just past the spur to the summit of Grandmother Mountain to make this an overnight option.

Trail Conditions

Trail Conditions

Unknown

We have no current condition data for this trail. Check with the operator before you go, and submit a report below if you've been recently.

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Elevation Profile

Min:1,708 ft
Max:1,931 ft
654 ft
654 ft
1,708 ft1,782 ft1,857 ft1,931 ft0.0 mi2.1 mi4.1 mi6.2 mi8.3 mi

Trail Details

Route Type
Out & Back
Surface
Dirt

Official sources & verification

Managed by United States Forest Service

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Managing agency

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  • Address:ID
We display cached information from agency feeds. Hours, fees, permits, closures, fire restrictions, and conditions change without notice. Outdoors is not the permitting authority. Confirm current conditions for this trail using the links above before you go — you are responsible for compliance. Last verified by us: May 23, 2026. Our copy is more than a month old — please reconfirm with the agency before relying on it.Spot an error in our data?

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Legacy import — verify before navigating

Path geometry came from our pre-launch legacy database. Routes have not yet been re-verified against the operator and may differ from the actual trail.

Hunt context

This trail crosses hunting units

During hunting seasons, wear blaze orange and check regulations — see the Idaho hunting page

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