Openings · last 7 days
0
01 · Detected Opening History · the openings record · file CS-231911
When Grayback reopens
Grayback's openings record: every site-date Campsite Sniper detected turning available, logged and time-stamped. Refreshed hourly.
Openings · last 30 days
4
Openings · last 90 days
4
Only 4 openings in the last 90 days: not enough recent activity for a reliable pattern. A free Campsite Sniper alert watches around the clock instead, and pings you the moment one opens.
02 · Availability Outlook · Sep 18, 2026 – Mar 19, 2027 · of 14 monitored sites
Of the 188 tracked site-nights (Sep 18, 2026 – Mar 19, 2027): 5 reserved · 10 on sites not offered for online reservation (first-come, first-served or administrative) · 173 unavailable (cause unspecified).
No online availability right now
Of the 188 tracked site-nights (Sep 18, 2026 – Mar 19, 2027): 5 reserved · 10 on sites not offered for online reservation (first-come, first-served or administrative) · 173 unavailable (cause unspecified). A free alert tells you if any date opens online.
Load status
Sep 18, 2026 – Mar 19, 2027Not open online100%
Open site-nights0 / 188
Reserved (of online inventory)5 / 5
Of the 188 tracked site-nights (Sep 18, 2026 – Mar 19, 2027): 5 reserved · 10 on sites not offered for online reservation (first-come, first-served or administrative) · 173 unavailable (cause unspecified).
Open dates by month
Sep 2026 – Mar 2027No month in range currently shows online availability. 0 open site-nights across the tracked window — these site-nights are a mix of reserved, closed, unreleased and non-reservable dates.
Holiday windows
Sites open per night · of 14 sites| Window | Night | Sites open | Status |
|---|---|---|---|
| Labor Day | SAT Sep 5 | 0 | None open |
| SUN Sep 6 | 0 | None open | |
| MON Sep 7 | 0 | None open | |
| Thanksgiving | THU Nov 26 | 0 | None open |
| FRI Nov 27 | 0 | None open | |
| SAT Nov 28 | 0 | None open | |
| Christmas | THU Dec 24 | 0 | None open |
| FRI Dec 25 | 0 | None open | |
| New Year | THU Dec 31 | 0 | None open |
| FRI Jan 1 | 0 | None open |
Labor Day: no online availability on any tracked night. Thanksgiving: no online availability on any tracked night. Christmas: no online availability on any tracked night. New Year: no online availability on any tracked night.
About Grayback
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
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.
14 monitored sitesRVs up to 85 ftNo hookups14 shadedPets OKFire pitsMax party 150
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.
Po Box 129, Idaho City, ID 83631208-392-6681
CampingFishingHikingHuntingVisitor CenterWildlife Viewing
View on Recreation.gov ↗ Get directions ↗
03 · Field Photos · roll CS-231911 · facility
Photo gallery
Roll CS-231911 · Grayback · Idaho City ID12 frames · facility
FAQ
How do I get a reservation at Grayback?
Campsite Sniper's current snapshot shows none of the 188 tracked site-nights open for online reservation at Grayback. That can mean dates are reserved, closed, not yet released, or offered first-come, first-served rather than online. Campsite Sniper has also detected 4 site openings here in the last 90 days, so further dates may appear. Pick a site on the map to see its calendar, or set a free Campsite Sniper alert. You complete the reservation yourself on Recreation.gov.
Does Campsite Sniper book this campground for me?
No. Campsite Sniper sends alerts and direct Recreation.gov links. It never books, pays for, holds, hoards, or resells reservations.
How current is this availability data?
Campsite Sniper re-checks public Recreation.gov availability for this facility every hour and republishes whenever anything changes. This facility's data last changed at Sep 18, 2026 16:19 UTC; an older timestamp means nothing has changed since that time, not that checking stopped. Always confirm final availability on Recreation.gov when you book.
How often do new openings appear at Grayback?
Campsite Sniper detected 4 site-date openings here over the last 90 days, none in the last 7. A free alert watches around the clock and pings you the moment one appears.
Which sites at Grayback fit a 35-foot RV?
13 of the 14 sites that support RV analysis have a recorded maximum of 35 ft or more; the longest recorded is 85 ft.
Does Grayback have online availability right now?
As of the Sep 18, 2026 snapshot, none of the 188 tracked site-nights are open for online reservation. That can mean dates are reserved, closed, not yet released, or offered first-come, first-served rather than online. A free Campsite Sniper alert tells you if any date opens online.
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