0
Pull-thru
USFSBoise National Forest · Idaho
Elks Flat Campground
Overview Elks Flat Campground is situated on the banks of the South Fork Boise River, at the foot of the Trinity Mountain Range in Idaho.
Sites2all reservable
Elev.4,380ft
Comf.May-Oct6 months
Max rig50 ft
Electricnonesites
From Boise2h19real 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 4,380 ft, Elks Flat Campground has a 6-month comfortable window (May-Oct). Winter nights average around 17°F, so the shoulder seasons turn cold fast. All 2 sites are reservable in advance, so plan ahead. Popular weekends book out. Within about 4 miles: 2 peaks, lake or river access.
The campground at a glance
01 · CHARACTER
Reads strongest on shade and reservability. 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
May-Oct
Comfortable window: nights stay above 35°F, days below 90°F.
92%
Of summer weekend-days are dry.
May 22
Last spring frost; first fall frost Oct 15.
55°F
Average July low. Bring a fleece.
Getting there
03 · ACCESS
01
Boise
99 mi
2h19
02
Idaho Falls
203 mi
4h27
03
Coeur d'Alene
549 mi
10h31
By drive time
Routed road time (OSRM). Nearest major highway 15.1 mi away.
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
4
Peaks
2
Water & Access
Lake / river access
yes
To nearest major road
15.1 mi
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.