Cabin rental · U.S. Forest Service · Boise National Forest · Mountain Home, ID

Big Trinity Cabin

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.

Cabin rentalReservable · Recreation.gov2 sitesPets okFires ok
Check availability on Recreation.gov ↗
Whiite cabin with green roof located in pine treesBig Trinity CabinRoom with windows, tables, and chairs located in the middleBIG TRINITY CABIN
Photos courtesy of US Forest Service, US. Forest Service · Recreation.gov
2fires
active
Paradise Rx (prescribed burn) · 28 mi away
1 more within 50 miles
Incident details ↓

Site mix

Cabins2
The 2 cabins here book on Recreation.gov. The booking page shows which dates are open and how far ahead they release. How the booking window works

Site guide

2 sites in 2 loops. Tap a filter to narrow the list; the map follows.

SiteLoopSurfaceShadePeople / vehiclesFires
1BIGGravelPartial6 / 2Yes
2SMALGravelPartial4 / 1Yes

Per-site records as published by the managing agency on Recreation.gov. Blank cells mean the agency listed nothing for that site. Check-in 2:00 PM, checkout 1:00 PM.

Amenities & rules

PetsAllowed
CampfiresAllowed, subject to restrictions

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.

Individual sites vary. Confirm on Recreation.gov or with the managing office.

Weather by month

NOAA climate normals →
Weather by month near Big Trinity Cabin20°30°40°50°60°70°January: 3.16 inches of precipitationFebruary: 1.94 inches of precipitationMarch: 2.26 inches of precipitationApril: 1.59 inches of precipitationMay: 2.11 inches of precipitationJune: 1.09 inches of precipitationJuly: 0.32 inches of precipitationAugust: 0.44 inches of precipitationSeptember: 0.77 inches of precipitationOctober: 1.50 inches of precipitationNovember: 2.41 inches of precipitationDecember: 3.53 inches of precipitationJanFebMarAprMayJunJulAugSepOctNovDecJanuary: 24.4°F averageFebruary: 28.2°F averageMarch: 34.9°F averageApril: 41.7°F averageMay: 50.5°F averageJune: 57.8°F averageJuly: 66.3°F averageAugust: 65.0°F averageSeptember: 56.1°F averageOctober: 44.5°F averageNovember: 32.5°F averageDecember: 24.3°F average0 in1 in2 in3 in4 inTemp °FInches
The line is the average temperature and the bars are average precipitation at Idaho City, 24 miles from the campground at 3,965 feet, station USC00104442 in the NOAA monthly climate normals for 1991 to 2020. Precipitation totals about 21 inches a year.

Getting there

Travel east from Boise, Idaho on I-84 to Mountain Home. At I-84/Highway 20 junction, take Highway 20 east for 35 miles to Pine/Featherville turnoff. Travel north on Forest Highway 61 for 29 miles to Forest Road 172. Travel 15 miles northwest to Forest Road 129. Travel 3 miles to the Guard Station junction.

Nearest townMountain Home, Idaho
Coordinates43.6289° N, 115.4369° W · Directions ↗

Fire nearby

  • Prescribed
    Paradise Rx

    28 mi from the campground

  • Prescribed
    Rx Lowman Wui

    33 mi from the campground

Distance is to the reported incident point, not the fire edge. Call the managing office before you drive.

Supplies & services

Dump stationDump station ↗18.9 mi
Outdoor gearBoise Gear Collective ↗38.5 mi
RV sales & serviceAllan Marsh Travel Center ↗40.6 mi

Locations © OpenStreetMap contributors. Call ahead; hours change seasonally.

Explore

Worth a stop

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.

Trails nearby

Forest Service trail data →
  • 0.1 mi
    Roaring River ↗
    7.6 mi trail · hiking, horse, bike, motorcycle and 1 more
  • 0.5 mi
    Big Trinity Lake
    0.5 mi trail · hiking, horse, bike
  • 0.6 mi
    Rainbow Basin ↗
    4.5 mi trail · hiking, horse, bike
  • 0.9 mi
    Trinity Creek Upper
    1.6 mi trail · hiking, horse, bike, motorcycle and 1 more
  • 1.5 mi
    Green Island Lake
    0.2 mi trail · hiking, horse, bike
  • 1.7 mi
    Fiddle Lake
    0.4 mi trail · hiking, horse, bike

Trailheads within three miles

Trail and trailhead records are the Forest Service's. Distances are straight-line to the nearer trail end. Trail conditions are not tracked here.

Public land it sits in

On Wilderness Atlas →

This campground sits inside Boise National Forest.

Each unit is published as a centre point and an acreage rather than a boundary, so this section stands it in for a circle of the same area. Whether a campground is inside, and how far it is from one it is outside, are both approximate.

On the National Register nearby

On Register Atlas →

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.

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. 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.

Guidebooks for Idaho

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Titles come from Open Library's catalog, matched by subject heading or by title.

Reference

Questions people ask

Do I need a reservation at Big Trinity Cabin?

Sites at Big Trinity Cabin are reservable on Recreation.gov. Any walk-up sites are listed on the booking page.

Source: Recreation.gov

What time is check-in at Big Trinity Cabin?

Check-in 2:00 PM, checkout 1:00 PM.

Source: Recreation.gov

How many sites does Big Trinity Cabin have?

2 sites, including 2 cabins.

Source: Recreation.gov

Are pets allowed at Big Trinity Cabin?

Yes, pets are allowed at Big Trinity Cabin. Leash rules apply.

Source: Recreation.gov

Can I have a campfire at Big Trinity Cabin?

Fires are allowed in the provided rings under normal conditions. As of 2026-10-16, there are 2 active fires within 50 miles, so check current restrictions before you light one.

Source: Fire nearby

What is there to do at Big Trinity Cabin?

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. The Recreation section on this page has the rest.

Source: Recreation

What is the nearest town to Big Trinity Cabin?

Mountain Home, Idaho. The summit of Trinity Mountain is the highest drivable point in Idaho, although the road may be blocked by snow until early July.

Source: Getting there

What if Big Trinity Cabin is full?

The nearest public campgrounds are Big Trinity Lake Campground (0.3 mi, first-come), Little Roaring River Lake Campground (0.4 mi, first-come), and Big Roaring River Lake Campground (0.7 mi, first-come).

Source: Campgrounds nearby