Pick a site on the map to see its availability calendar.
Only 32 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.
Of the 96 tracked site-nights (Sep 18 – Sep 21, 2026): 22 open for online reservation · 43 reserved · 31 on sites not offered for online reservation (first-come, first-served or administrative). Of the facility's 24 monitored sites, 19 can be reserved online and 5 are first-come, first-served.
Of the open site-nights on mapped sites, 15 fall on weekdays and 7 on weekends (Fri–Sun).
September holds the most room. 22 of 96 site-nights are still open there.
| 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.
| Site | Open site-nights |
|---|---|
| 002 | 2 |
| 005 | 2 |
| 007 | 2 |
| 008 | 2 |
| 009 | 2 |
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.
The next bookable night is Sep 20. Campsite Sniper can watch later dates for you.
Multi-night stays. 7 2-night opening where a single site is free for every night, per Campsite Sniper's current snapshot — soonest Sep 20 at site 002.
RV length. Longest recorded site here is 85 ft. 23 sites take 25 ft, 22 sites take 35 ft, 22 sites take 40 ft. 1 site of 24 has no recorded maximum and is not counted.
| Site | Max RV | Hookups | Open site-nights | Longest run | Dates |
|---|---|---|---|---|---|
| 002 | 40 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| 005 | 28 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| 007 | 40 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| 008 | 45 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| 009 | 45 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| 010 | 50 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| 024 | 65 ft | Yes | 2 | 2 nights | Sep 20, Sep 21 |
| 001 | 50 ft | None | 1 | 1 night | Sep 21 |
| 003 | 40 ft | None | 1 | 1 night | Sep 21 |
| 012 | 55 ft | Yes | 1 | 1 night | Sep 21 |
| 013 | 55 ft | Yes | 1 | 1 night | Sep 21 |
| 014 | 55 ft | Yes | 1 | 1 night | Sep 21 |
| 015 | 58 ft | Yes | 1 | 1 night | Sep 21 |
| 018 | 58 ft | Yes | 1 | 1 night | Sep 21 |
| 023 | 65 ft | Yes | 1 | 1 night | Sep 21 |
Sibley Lake Campground is located at Sibley Lake along the Bighorn Scenic Byway (U.S. Highway 14) near the Burgess Junction at an elevation of 7,900 feet. The Bighorn National Forest offers a wide variety of activities, including hiking, fishing, scenic driving and a number of historic sites. The administering organization is Rustic Freedom / Gallatin Canyon Campgrounds; e-mail: support@rusticfreedom.com
Sibley Lake is open to non-motorized craft and offers an accessible fishing dock on the shoreline. Anglers fish for rainbow, brown and brook trout.
Off-road vehicle trails, scenic jeep roads, hiking and additional fishing streams are available in the surrounding area. Diverse hikes vary from loop trails to treks along creeks and over mountain peaks; many trails access the Cloud Peak Wilderness.
The campground offers several single-family sites each equipped with a picnic table and campfire ring with grill. Accessible vault toilets, drinking water and trash collection are provided.
The campground is situated near Sibley Lake and Prune Creek in the Bighorn Mountains, where craggy granite peaks rise over 13,000 feet above sea level. A forest of lodgepole pine covers the area, creating excellent wildlife habitat.
Shell Falls Visitor Center, at the overlook of Shell Falls, is about 25 miles southwest. This center offers interpretive trails, scenic views, and educational displays about natural features such as flora and fauna and area history.
From Dayton, Wyoming, take U.S. Highway 14 southwest about 25 miles to the campground.
View on Recreation.gov ↗ Get directions ↗












Reservations for Sibley Lake are made through Recreation.gov. 77.1% of tracked site-nights are not currently open for online reservation; 22 of 96 remain open. Campsite Sniper has also detected 32 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.
No. Campsite Sniper sends alerts and direct Recreation.gov links. It never books, pays for, holds, hoards, or resells reservations.
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.
Campsite Sniper detected 18 site-date openings at Sibley Lake in the last 7 days, 28 over 30 days and 32 over the last 90.
22 of the 24 sites that support RV analysis have a recorded maximum of 35 ft or more; the longest recorded is 85 ft. 23 of those 24 sites have a recorded maximum length and 1 does not; it is not counted as fitting.
September 2026, with 22 open site-nights in the current snapshot of 96.
As of the Sep 18, 2026 snapshot: the next open date is Sun, Sep 20. Detected openings can add earlier dates at any time; a free Campsite Sniper alert catches those the moment they appear.
Lakefront, hookups, your RV length, weekends only - set it as picky as you want.
We run paced availability checks for Sibley Lake. One watch covers every matching online-reservable site.
When a match opens, you get a push with a Recreation.gov link so you can review and book it yourself.
Alerts monitor online-reservable inventory only; first-come, first-served sites are not included.