Grayback Campground and Group sites - reserve

Campground · Idaho ·

Managed by the USDA Forest Service

Boise National Forest (NF) · Open Access

3,988 ft
Elevation

Grayback Campground is located 36 miles northeast of Boise, Idaho, just off scenic State Highway 21. Historic Idaho City is just two miles north of the campground. Visitors enjoy fishing in Mores Creek and exploring the Grayback Gulch Trail. 

Natural Features:

The campground is situated on a hillside about a quarter-mile above State Highway 21, at an elevation of 4,200 feet. A ponderosa pine forest covers the site, offering partial shade. Wildlife and summer wildflowers are abundant in the area.

Recreation:

Mores Creek can be accessed just below the campground. Anglers fish for rainbow trout.  Grayback Loop Trail begins within the site, offering a 1-mile footpath for hikers.

Numerous trail opportunities are in the area just north of Idaho City, where hiking, biking, horseback riding and off-road vehicles can be enjoyed. During the winter, the area becomes a playground for back country skiers and snowmobiles.

Getting there

From Boise, Idaho, take State Highway 21 north for 36 miles.

The campground access road is located on the east side State Highway 21, between mileposts 36 and 37.

Turn right and proceed less than a mile to the campground.

43.80485, -115.86243 · 43°48'17.5"N 115°51'44.7"W

Directions (Google Maps) · Directions (Apple Maps)

Typical weather

Typically 87°F in Jul, down to 35°F in Dec.

JanFebMarAprMayJunJulAugSepOctNovDec
High °F354148566675878677624435
Low °F141622283540464436282114
Precip in3.21.92.31.62.11.10.30.40.81.52.43.5

1991–2020 averages from the nearest NOAA station, 2.8 mi away — not measured at the facility itself, and elevation can make a real difference over that distance.

Map

Member photos

Common questions about Grayback Campground and Group sites - reserve

Can you reserve a site at Grayback Campground and Group sites - reserve?
No. Grayback Campground and Group sites - reserve is not reservable through Recreation.gov, so sites are first-come, first-served or booked elsewhere.

Camping near Grayback Campground and Group sites - reserve

Comments

Contact

Recreation.gov last updated this record on 2026-02-25.

Facility information and photographs from Recreation.gov (RIDB). SpotOpened is not affiliated with Recreation.gov or any federal agency.