Grayback

Campground · Idaho · 14 bookable sites ·

Managed by the USDA Forest Service

Boise National Forest (NF) · Open Access

14
Bookable sites
85 ft
Max rig length
up to 150
People per site
3,950 ft
Elevation
A partially shaded campsite with a paved driveway.
Photo: Peggy Nance / USDA Forest Service · Recreation.gov

Overview

Grayback Campground is located 36 miles northeast of Boise, Idaho, just off scenic 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.
 

Recreation

Mores Creek can be accessed just below the campground. Anglers fish for whitefish and 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.

Facilities

The group campground contains two group sites with picnic and serving tables, grills, campfire circles and paved site pads. Site A can accommodate up to 150 people and 20 vehicles, and site B can accommodate up to 100 people and 15 vehicles. Both sites can be reserved at the same time, for even larger groups. The group sites share one accessible bathroom facility that has a men's and women's side, each with four stalls. There is also an accessible hand pump for drinking water and a dumpster that is shared between the two sites.


The campground hosts 15 single sites and 3 double sites, each equipped with a paved parking spot, picnic table, lantern hook, and campfire ring. Three vault toilets, a two accessible hand pumps for drinking water, and dumpster are provided in the campground. Sites 2, 4, 7, 8, 11, and 15 are not listed on Recreation.gov and are first-come-first-serve.

Natural Features

The campground is situated on a hillside about a quarter-mile above 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. Mores Creek flows nearby, down the hillside from the campground

Contact Info

This location is unstaffed. To speak with our main office for general information, please call: (208) 392-6681.

Nearby Attractions

Highway 21, also known as the Ponderosa Pine Scenic Byway, snakes along Mores Creek to Mores Creek Summit, Gold Fork and Banner Ridge, offering historic sites, hot springs pools and breathtaking views of the surrounding mountains and forest along the way to the campground.

The campground is only 2 miles away from historic Idaho City, which is an old gold mining town that hosts multiple restaurants, bars, shops, a vistor center, and a museum. 

The facts

  • Season: Mid-May – Mid-October — USDA Forest Service, Aug 24, 2026
  • 14 bookable sites
  • Vehicles up to 85 ft
  • Up to 150 people per site
  • Loops: GRAY, GRPA, GRPB, MULT

Site types

  • 12 Standard Nonelectric
  • 2 Group Standard Nonelectric

Amenities

  • Campfires allowed
  • Fire pits
  • Picnic tables
  • Grills
  • Shade
  • Pets allowed
  • Water hookups — not available
  • Sewer hookups — not available

Not recorded upstream: electric hookups.

Book on Recreation.gov

14 campsites at Grayback

SiteLoopTypeEntrySurfaceMax rigPeople
003GRAYStandard NonelectricBack InPaved66 ft6 🐾
005GRAYStandard NonelectricBack InPaved26 ft6 🐾
006GRAYStandard NonelectricBack InPaved39 ft6 🐾
009GRAYStandard NonelectricBack InPaved41 ft6 🐾
010GRAYStandard NonelectricBack InPaved49 ft6 🐾
012GRAYStandard NonelectricBack InPaved62 ft6 🐾
013GRAYStandard NonelectricBack InPaved59 ft6 🐾
014GRAYStandard NonelectricBack InPaved47 ft6 🐾
016GRAYStandard NonelectricBack InPaved53 ft6 🐾
017GRAYStandard NonelectricBack InPaved59 ft6 🐾
GRPAGRPAGroup Standard NonelectricBack InPaved50 ft150 🐾
GRPBGRPBGroup Standard NonelectricBack InPaved50 ft100 🐾
001MULTStandard NonelectricBack InPaved69 ft12 🐾
018MULTStandard NonelectricBack InPaved85 ft12 🐾

Getting there

From Boise, take State Highway 21 north for 36 miles. Campground access road is located on the east side of the road, between mileposts 36 and 37. Turn right and travel a quarter-mile to the campground.

43.80722, -115.86472 · 43°48'26.0"N 115°51'53.0"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, 2.7 mi away — not measured at the facility itself, and elevation can make a real difference over that distance.

Map

More photos

Member photos

Common questions about Grayback

Can you reserve a site at Grayback?
Yes, Grayback is reservable through Recreation.gov.
How many campsites does Grayback have?
14 sites.
What is the maximum RV length at Grayback?
85 ft. That is the longest vehicle the sites here are recorded as taking; individual sites may be shorter.
Are pets allowed at Grayback?
Yes, pets are allowed at Grayback.
Does Grayback have hookups?
No hookups are recorded here.
Are campfires allowed at Grayback?
Campfires are allowed at Grayback. Check for a current fire restriction before you go.

Camping near Grayback

Comments

Contact

Recreation.gov last updated this record on 2026-03-11.

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