0
Pull-thru
USFSBoise National Forest · Idaho
Big Trinity Cabin
Overview Big Trinity Cabin offers a quiet retreat in a beautiful high alpine landscape.
Sites21 reservable
Elev.7,825ft
Comf.Jun-Sep4 months
Max rigtents
Electricnonesites
From Boise3h21real road time
The honest read
Synthesized from
RIDB · Open-Meteo
OSM · OSRM
Updated 2026-05-27
RIDB · Open-Meteo
OSM · OSRM
Updated 2026-05-27
At 7,825 ft, Big Trinity Cabin has a 4-month comfortable window (Jun-Sep). Winter nights average around 14°F, so the shoulder seasons turn cold fast. 2 sites total: 1 reservable and 1 first-come, first-served. Within about 4 miles: 8 peaks, lake or river access.
The campground at a glance
01 · CHARACTER
Reads strongest on shade and cool nights. Softest on roomy sites.
Six axes, each scored relative to every other federal campground in the region: quiet (miles to a major road), cool (elevation), roomy (average site spacing), shade, RV-fit (longest rig), and how reservable it is. All six come from data, nothing hand-tuned.
When to go
02 · CLIMATE
avg highavg lowfrost-freedriest · Jul
Jun-Sep
Comfortable window: nights stay above 35°F, days below 90°F.
79%
Of summer weekend-days are dry.
Jun 21
Last spring frost; first fall frost Sep 24.
54°F
Average July low. Bring a fleece.
Getting there
03 · ACCESS
01
Boise
98 mi
3h21
02
Idaho Falls
227 mi
5h50
03
Coeur d'Alene
549 mi
11h33
By drive time
Picking your site
04 · 2 SITES
Color byShow only
2 mapped sites · dot color = seclusion · click a dot for details. Basemap © OpenStreetMap.
0
Walk-in
0
50-amp
0
Accessible
0
Prime
2
Sites
What's within four miles
05 · TRAILS · PEAKS · WATER
Trails & Peaks
Trail segments
29
Peaks
8
Viewpoints
1
Water & Access
Lake / river access
yes
Method
We synthesize public data layers: RIDB and Recreation.gov facility and site records, Open-Meteo climate normals, OpenStreetMap roads, trails, and water, OSRM drive times, and USGS elevation. We take no bookings, no ads, and no paid placements. Independence is the entire point.