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Big Trinity Cabin in Idaho
Hard to BookNational Forest

Big Trinity Cabin

Boise National Forest, Idaho

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As of October 2026, Big Trinity Cabin is a campground in Boise National Forest, Idaho with 1 campsite. Big Trinity Cabin is booked through Recreation.gov.

  • PermitSnag checks Big Trinity Cabin for availability and tells alert holders when a site opens up.
  • Big Trinity Cabin is located at 43.6289ยฐ N, 115.4369ยฐ W.
people allowed on each site
6

Big Trinity Cabin reservations and next available dates

October 2026

open, tap to book on Recreation.govsold outin your alert

Campsites at Big Trinity Cabin

  • Cabin 1

Amenities

  • restrooms
  • potable water

At a glance: Setting: Mountain.

Things to do: fishing, boating, hiking, wildlife, photography, offroad.

All sites at Big Trinity Cabin, as listed by Recreation.gov

Every site is in the BIG loop.

SiteTypeSleeps
1Cabin6

About Big Trinity Cabin

Overview

Big Trinity Cabin offers a quiet retreat in a beautiful high alpine landscape. The cabin is situated within a popular summer recreation area with many activities to enjoy.

The cabin has a limited season due to late snow melt, but is accessible by vehicles with reasonable ground clearance. Many creature comforts are provided; however, guests may want to bring some supplies and gear to make their experience more comfortable and enjoyable.

Recreation

The 4- mile Rainbow Basin Trail system for pedestrain travel only, offers access to several lakes, hikers can access the trail System from the trailhead located within Big Trinity Lake campground. Other trails within the area Roaring River trail 045, and Lava Mountain trail 125, these are motorized motorcycle trails. Click here for an Idaho OHV Safety Message.

Anglers can fish in any of the nearby lakes for rainbow and cutthroat trout. The lakes are also ideal for exploring by canoe or kayak.

Facilities

The cabin sleeps six and is equipped with one double bed, a sofa bed, side tables, a drop-down kitchen table, cleaning supplies, dishes and tableware, chairs and a dining table, cookware and a fire extinguisher. A wood stove is available for heating and cooking.

A picnic table and campfire ring with grill are provided outside. Drinking water is available from a nearby hand pump. The cabin is stocked with seasoned wood, a splitting maul, axe and hatchet. A vault restroom is located outside.

No electricity or propane is available. Guests must bring garbage bags to pack out their trash. Bedding, lighting and emergency supplies are not provided. Guests are responsible for cleaning the cabin before leaving.

Natural Features

The cabin is located in a dense lodgepole pine forest close to the East Fork Roaring River at an elevation of 7,900 feet. It's nestled among four subalpine lakes: Big Roaring River Lake, Little Roaring River Lake, Big Trinity Lake and Little Trinity Lake. The peaks of the Boise Mountains surround the cabins, and Trinity Mountain, the tallest in the range at 9,451 feet, is just to the south.

Snow can make this area inaccessible until early July, but soon afterward, the land is blanketed by colorful summer wildflowers. This area is a haven for elk and deer, but wildlife watchers may also spot an occasional black bear.

Nearby Attractions

The summit of Trinity Mountain is the highest drivable point in Idaho, although the road may be blocked by snow until early July. A short, steep hike takes visitors to the lookout tower for panoramic views of several subalpine lakes and other mountains in the Boise Range.

Rules and notices at Big Trinity Cabin

Recreation.gov does not date these notices. We last read them on September 29, 2026. Check Big Trinity Cabin on Recreation.gov

Notices from Recreation.gov

Instructions for the combination lock on the door are located at the gate and cabin entrance; the combination is included in the reservation confirmation letter

No water is available in the cabin; it is only available from the outside hand pump

No garbage service; trash must be packed out

Phone service is one hour away

Candles are not permitted in the cabin

Camping is not allowed at this site; please do not use tents at the cabin

Livestock, such as saddle, pack or draft animals, is not allowed at this site

Camping is available on a first come, first served basis at three nearby campgrounds: Big Trinity, Big Roaring and Little Roaring

Click here for more information about Boise National Forest

Don't Move Firewood: Help prevent the spread of tree-killing pests in our national forests by obtaining firewood near your destination and burning it on-site. For more information visit dontmovefirewood.org.

Big Trinity Cabin FAQ

How hard is it to get a campsite at Big Trinity Cabin?

Big Trinity Cabin is rated "Hard to Book" based on historical demand. This campground is popular and often books out weeks in advance. Your best strategy is to monitor cancellations.

How do I find last-minute availability at Big Trinity Cabin?

Cancellations happen frequently at Big Trinity Cabin, especially 1-2 weeks before check-in dates. PermitSnag monitors availability 24/7 and sends instant alerts when sites open up due to cancellations. This is often the best way to snag popular campsites.

How many campsites does Big Trinity Cabin have?

Big Trinity Cabin has 1 campsites.

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