Openings · last 7 days
15
Booking reality
Campsite Sniper detected 15 site openings here in the last 7 days
01 · Detected Opening History · the openings record · file CS-232242
When Upper Sage Flat reopens
Upper Sage Flat's openings record: every site-date Campsite Sniper detected turning available, logged and time-stamped. Refreshed hourly.
Openings · last 30 days
45
Openings · last 90 days
50
Weekday pattern
Detected openings by day of week · 90dNo strong weekday pattern is evident in the openings Campsite Sniper has detected: 50 openings spread across the week.
Hour-of-day pattern
First detected by hour · local time · last 90 daysThe largest concentrations of detected openings were first detected during the 00:00 and 22:00 local-time hours. Those hours contained 14 of 50 detected openings (28.0%). Hours show when Campsite Sniper first detected each opening, in Pacific Time, not when the change was made upstream.
Lead-time profile
Days before stay date · percentilesHalf of the openings Campsite Sniper detected appeared at least 21 days before the stay date; the middle 50% land 12.2–41 days out. Set an alert if you want Campsite Sniper to monitor future openings.
Highest-churn sites
Most openings · 90d| Site | Openings | Share of all openings |
|---|---|---|
| 018 | 11 | 22.0% |
| 016 | 9 | 18.0% |
| 020 | 5 | 10.0% |
| 006 | 5 | 10.0% |
| 017 | 4 | 8.0% |
Site 018 had the most detected openings in the last 90 days: 11. One free watch covers every site here.
02 · Availability Outlook · Sep 18 – Oct 24, 2026 · of 20 monitored sites
Of the 740 tracked site-nights (Sep 18 – Oct 24, 2026): 317 open for online reservation · 422 reserved · 1 on sites not offered for online reservation (first-come, first-served or administrative).
Where the open windows are
57.2% of tracked site-nights are not currently open for online reservation. 317 of 740 remain open; here is where they are.
Load status
Sep 18 – Oct 24, 2026Not open online57.2%
Open site-nights317 / 740
Reserved (of online inventory)422 / 739
Weekday openings223
Weekend openings43
Of the open site-nights on mapped sites, 223 fall on weekdays and 43 on weekends (Fri–Sun). The split covers the 266 open site-nights on mapped sites; 317 site-nights are open across all monitored inventory.
Open dates by month
Sep 2026 – Oct 2026October holds the most room. 210 of 480 site-nights are still open there.
Holiday windows
Sites open per night · of 18 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 |
Labor Day: no online availability on any tracked night.
Best-availability sites
Most open site-nights · tracked window| Site | Open site-nights |
|---|---|
| 014 | 25 |
| 005 | 23 |
| 012 | 23 |
| 007 | 22 |
| 009 | 21 |
The 5 sites with the most open site-nights in the current snapshot. Pair a bookable date with a free alert to cover everything else.
Next windows
As of Sep 18, 2026 snapshotNext open dateSun · Sep 20
Next open weekendFri · Oct 23
The next bookable night is Sep 20; the first open weekend starts Oct 23. Campsite Sniper can watch later dates for you.
Stays and site detail
266 open site-nights across 18 sites at Upper Sage Flat, from the same hourly snapshot as everything above.
Multi-night stays. 63 2-night, 49 3-night, 4 7-night openings where a single site is free for every night, per Campsite Sniper's current snapshot — soonest Sep 20 at site 005.
RV length. Longest recorded site here is 45 ft. 18 sites take 25 ft, 14 sites take 35 ft, 10 sites take 40 ft.
All 18 sites with current availability
| Site | Max RV | Hookups | Open site-nights | Longest run | Dates |
|---|---|---|---|---|---|
| 014 | 30 ft | None | 25 | 7 nights | Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5 +13 more |
| 005 | 40 ft | None | 23 | 5 nights | Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6 +11 more |
| 012 | 40 ft | None | 23 | 7 nights | Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8 +11 more |
| 007 | 30 ft | None | 22 | 7 nights | Sep 20, Sep 23, Sep 24, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8, Oct 12 +10 more |
| 009 | 35 ft | None | 21 | 7 nights | Sep 21, Sep 23, Sep 27, Sep 28, Sep 29, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8, Oct 12, Oct 13 +9 more |
| 013 | 25 ft | None | 20 | 5 nights | Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7 +8 more |
| 021 | 35 ft | None | 20 | 5 nights | Sep 21, Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 4, Oct 5, Oct 8, Oct 12 +8 more |
| 015 | 40 ft | None | 19 | 5 nights | Sep 21, Sep 22, Sep 23, Sep 24, Sep 27, Sep 29, Sep 30, Oct 1, Oct 7, Oct 8, Oct 12, Oct 13 +7 more |
| 016 | 40 ft | None | 16 | 5 nights | Sep 22, Sep 27, Sep 28, Sep 29, Sep 30, Oct 5, Oct 6, Oct 7, Oct 8, Oct 14, Oct 15, Oct 18 +4 more |
| 020 | 40 ft | None | 15 | 5 nights | Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Oct 12, Oct 13, Oct 14, Oct 15, Oct 18, Oct 19 +3 more |
| 006 | 35 ft | None | 14 | 4 nights | Sep 21, Sep 27, Sep 28, Sep 30, Oct 4, Oct 5, Oct 6, Oct 7, Oct 12, Oct 13, Oct 14, Oct 15 +2 more |
| 004 | 45 ft | None | 13 | 4 nights | Sep 23, Sep 28, Sep 29, Sep 30, Oct 1, Oct 5, Oct 6, Oct 7, Oct 8, Oct 12, Oct 13, Oct 14 +1 more |
| 010 | 40 ft | None | 12 | 5 nights | Sep 21, Sep 22, Sep 23, Sep 24, Sep 30, Oct 1, Oct 8, Oct 18, Oct 19, Oct 20, Oct 21, Oct 22 |
| 002 | 40 ft | None | 9 | 3 nights | Sep 22, Sep 23, Sep 28, Sep 29, Sep 30, Oct 5, Oct 6, Oct 21, Oct 22 |
| 019 | 40 ft | None | 5 | 2 nights | Sep 24, Oct 12, Oct 15, Oct 20, Oct 21 |
| 018 | 30 ft | None | 4 | 2 nights | Sep 23, Sep 24, Sep 30, Oct 11 |
| 017 | 35 ft | None | 3 | 2 nights | Oct 14, Oct 15, Oct 21 |
| 008 | 40 ft | None | 2 | 1 night | Oct 8, Oct 18 |
About Upper Sage Flat
Overview
Take the family to Upper Sage for a pleasant camping trip along the banks of Big Pine Creek. Here, visitors can experience the beauty of the creek that runs along the base of a narrow canyon. Visitors can swim or fish, in the creek that is stocked annually with trout, or head to a nearby lake for power boating.
Recreation
Rainbow, brown, brook and alpers trout swim in the stream, enticing anglers. Hikers are fans of the Big Pine Creek Trail, a 1.5-mile footpath that provides access to the John Muir Wilderness trails.
Facilities
Parking aprons are paved and most are 40 feet long. Amenities include flush toilets, drinking water, picnic tables and campfire rings.
Natural Features
The campground is sprawled out along Big Pine Creek beneath shady Jeffrey pines and cottonwoods, just 9 miles west of the town of Big Pine.
Inyo National Forest is home to many natural wonders, including Mt. Whitney, Mono Lake, Mammoth Lakes Basin, and the Ancient Bristlecone Pine Forest atop the White Mountains.
Bristlecone pines rank as the oldest trees in the world and have achieved immense scientific and cultural importance.
Nearby Attractions
Head to the neighboring John Muir Wilderness for incredible views of Palisades Glacier, the southern-most glacier in the country. Nearby Tinemaha Reservoir provides additional fishing opportunities.
20 monitored sitesRVs up to 45 ftNo hookups5 shadedPets OKMax party 6
Getting there
In Big Pine, on US Highway 395, turn west at the yellow flashing traffic light onto Crocker Street (Big Canyon Road). Continue on this road for 9 miles to campground, on your left.
Inyo, CA760-935-4339
CampingFishingHikingHorseback RidingWildlife Viewing
View on Recreation.gov ↗ Get directions ↗
03 · Field Photos · roll CS-232242 · facility + sites
Photo gallery
Roll CS-232242 · Upper Sage Flat · CA12 frames · facility + sites
FAQ
How do I get a reservation at Upper Sage Flat?
Reservations for Upper Sage Flat are made through Recreation.gov. 317 of 740 tracked site-nights are currently open (42.8%). Campsite Sniper has also detected 50 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 Upper Sage Flat?
Campsite Sniper detected 15 site-date openings at Upper Sage Flat in the last 7 days, 45 over 30 days and 50 over the last 90.
Can I get a multi-night stay at Upper Sage Flat?
49 three-night openings are showing, counting only runs where the SAME site is free for all three nights. The soonest starts Sep 20 at site 005. Confirm and book on Recreation.gov.
Which sites at Upper Sage Flat fit a 35-foot RV?
14 of the 18 sites that support RV analysis have a recorded maximum of 35 ft or more; the longest recorded is 45 ft.
Which month has the most availability at Upper Sage Flat?
October 2026, with 210 open site-nights in the current snapshot of 480.
How far ahead of a stay do openings appear at Upper Sage Flat?
Half of the openings Campsite Sniper detected appeared at least 21 days before the stay date; the middle 50% landed 12.2-41 days out. Campsite Sniper can monitor future changes for dates you select.
When is the next open date at Upper Sage Flat?
As of the Sep 18, 2026 snapshot: the next open date is Sun, Sep 20 and the next open weekend starts Fri, Oct 23. Detected openings can add earlier dates at any time; a free Campsite Sniper alert catches those the moment they appear.
Stop refreshing. Let the app watch it.
Filter
Lakefront, hookups, your RV length, weekends only - set it as picky as you want.
Watch
We run paced availability checks for Upper Sage Flat. One watch covers every matching site.
Get the ping
When a match opens, you get a push with a Recreation.gov link so you can review and book it yourself.