No detected openings were recorded in the last 90 days. Campsite Sniper monitors Black Mountain (san Bernardino) continuously and will alert you if that changes.
Of the 38 tracked site-nights (Sep 18 – Oct 25, 2026): 26 open for online reservation · 12 reserved.
Where the open windows are
Load status
Sep 18 – Oct 25, 2026Of the open site-nights on mapped sites, 20 fall on weekdays and 6 on weekends (Fri–Sun).
Open dates by month
Sep 2026 – Oct 2026October holds the most room. 18 of 25 site-nights are still open there.
Holiday windows
Sites open per night · of 1 site| 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 |
Labor Day: no online availability on any tracked night.
Availability
Most open site-nights · tracked window| Site | Open site-nights |
|---|---|
| 1 | 26 |
This site currently has 26 site-nights available.
Next windows
As of Sep 18, 2026 snapshotThe next bookable night is Sep 21; the first open weekend starts Oct 2. Campsite Sniper can watch later dates for you.
Stays and site detail
Multi-night stays. 5 2-night, 5 3-night openings where a single site is free for every night, per Campsite Sniper's current snapshot — soonest Sep 21 at site 1.
All 1 site with current availability
| Site | Max RV | Hookups | Open site-nights | Longest run | Dates |
|---|---|---|---|---|---|
| 1 | 12 ft | None | 26 | 6 nights | Sep 21, Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 2, Oct 4, Oct 5 +14 more |
About Black Mountain (san Bernardino)
Overview
Black Mountain Road is is poor condition at this time. 4 Wheel Drive is recommended. The road is currently a high-priority for maintenance, which should be occuring in June, 2023.
The Black Mountain Group Campground provides a picturesque camping location for large groups. Views from the campground encompass the desert divide, San Jacinto Mountains and, on a clear day, as far north as the San Gabriel Mountains.
The San Bernardino National Forest is submitting a proposal to increase fees at various sites across the Forest and is seeking public input. Please visit the https://www.fs.usda.gov/sbnf for more information and to submit comments regarding this proposal.
The surrounding area provides a variety of outdoor recreation opportunities, including hiking, climbing, fishing, biking and wilderness exploration.
Recreation
The Fuller Ridge Trail, which serves as part of the famous Pacific Crest Trail, is located just steps away from the campground. Starting at 7,600 feet, the trail follows the high, timbered ridge above Snow Creek, offering spectacular views of the desert. From there, it joins Deer Springs Trail and a strenuous climb to San Jacinto Peak, at 10,804 feet in elevation.
Facilities
The campground provides one large group campsite that can accommodate up to 100 guests for tent camping. A parking area can accommodate up to 25 vehicles, but rough roads to the site are not recommended for trailers of any kind.
The site is equipped with multiple tables and campfire circles with grills. Vault toilets are provided. Drinking water is not available in the campground, but can be found at the Cinco Posa Spring along Black Mountain Road, about two miles before the campground.
Natural Features
The campground is located in a heavily forested area of the mountains in southern California at an elevation of about 7,500 feet. The roads to and within the campground are not paved and much of the area is part of classified wilderness area.
Nearby Attractions
This group site is located approximately 50 miles southeast of San Bernardino, California, and 16 miles north of the small town of Idyllwild, which offers locally owned shops and restaurants.
Getting there
From Idyllwild, California, travel north on Highway 243 about 9 miles. Take a sharp right turn onto Black Mountain Trail/Forest Route 4S01 and continue just over 2 miles. Forest Route 4S01 turns slightly left and becomes Black Mountain Truck Trail, which leads to the campground.
View on Recreation.gov ↗ Get directions ↗
Photo gallery
FAQ
How do I get a reservation at Black Mountain (san Bernardino)?
Reservations for Black Mountain (san Bernardino) are made through Recreation.gov. 26 of 38 tracked site-nights are currently open (68.4%). 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.
Can I get a multi-night stay at Black Mountain (san Bernardino)?
5 three-night openings are showing, counting only runs where the SAME site is free for all three nights. The soonest starts Sep 21 at site 1. Confirm and book on Recreation.gov.
Which sites at Black Mountain (san Bernardino) fit a 35-foot RV?
No RV-analyzable site here has a recorded maximum of 35 ft or more; the longest recorded is 12 ft.
Which month has the most availability at Black Mountain (san Bernardino)?
October 2026, with 18 open site-nights in the current snapshot of 25.
When is the next open date at Black Mountain (san Bernardino)?
As of the Sep 18, 2026 snapshot: the next open date is Mon, Sep 21 and the next open weekend starts Fri, Oct 2. Detected openings can add earlier dates at any time; a free Campsite Sniper alert catches those the moment they appear.
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We run paced availability checks for Black Mountain (san Bernardino). One watch covers every matching site.
When a match opens, you get a push with a Recreation.gov link so you can review and book it yourself.