No detected openings were recorded in the last 90 days. Campsite Sniper monitors Three Sisters Group Site (MT) continuously and will alert you if that changes.
Of the 24 tracked site-nights (Sep 18 – Oct 11, 2026): 7 open for online reservation · 14 reserved · 3 closed.
Where the open windows are
Load status
Sep 18 – Oct 11, 2026Of the open site-nights on mapped sites, 5 fall on weekdays and 2 on weekends (Fri–Sun).
Open dates by month
Sep 2026 – Oct 2026October holds the most room. 5 of 11 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 |
|---|---|
| Three Sisters Group Site | 7 |
This site currently has 7 site-nights available.
Next windows
As of Sep 18, 2026 snapshotThe next bookable night is Sep 27. Campsite Sniper can watch later dates for you.
Stays and site detail
Multi-night stays. 2 2-night, 1 3-night openings where a single site is free for every night, per Campsite Sniper's current snapshot — soonest Sep 27 at site Three Sisters Group Site.
All 1 site with current availability
| Site | Max RV | Hookups | Open site-nights | Longest run | Dates |
|---|---|---|---|---|---|
| Three Sisters Group Site | Not recorded | None | 7 | 5 nights | Sep 27, Sep 28, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8 |
About Three Sisters Group Site (MT)
Overview
Three Sisters Group Site is located within the Lake Como Recreation Area on the Darby Ranger District of the Bitterroot National Forest. The group site, which is located across the road from the Rock Creek Horse Camp, is situated among the pine trees and is adjacent to the outlet of Lake Como.
Recreation
Boating, fishing, swimming and other water sports are popular on Lake Como. Anglers might see rainbow and cutthroat trout, as well as kokanee salmon, among other alpine species. A boat ramp and parking area are available at the south side of the lake. A large, sandy beach is available to visitors at the North side of the lake. To the West of the site on the North side, a short walk will take visitors to a trailhead that begins a 7-mile loop trail around Lake Como. The Lake Como National Recreation Loop Trail is suitable for hiking, mountain biking and accessing the lake for swimming or picnics. The first quarter-mile of the trail is wheelchair accessible and the trail also crosses Rock Creek at one point. Approximately 3.5 miles from the site, at the West end of the lake, is a magnificent waterfall that cascades over fern-covered rock cliffs. A trail continues from the waterfall, or heads west up Rock Creek, into the Selway-Bitterroot Wilderness area.
Facilities
Three Sisters Group Site has a 20’x30’ pavilion, equipped with 6 picnic tables, 1 BBQ grill, and 2 serving tables. The site also has benches around a fire ring, two outhouses, and accommodations for 25 vehicles. The maximum number of people allowed at the site is 75. Water, electricity, and firewood are not available at the site .
Natural Features
The group site is located near the East end of 913-acre Lake Como in the central Bitterroot Mountains of western Montana. It is situated at an elevation of 4,245 feet and is primarily used for meetings, reunions, weddings and family gatherings, as it can accommodate a larger group of people. A variety of wildlife and birds can be seen around the area and its surroundings. Osprey, bald eagles, deer, moose, elk and bears make their home in the area (learn about outdoor safety ).
Getting there
From Darby, Montana, continue north on Highway 93 for 4 miles. Turn west onto County Road 82/Lake Como Road. Follow signs to the Lake Como Recreation Area and continue West past Forest Road 1111 towards the Boat launch, to the site which is on the North side or right hand side of the road. Maps of the area can be purchased by calling the Darby Ranger District. 406-821-3913
View on Recreation.gov ↗ Get directions ↗
Photo gallery
FAQ
How do I get a reservation at Three Sisters Group Site (MT)?
Reservations for Three Sisters Group Site (MT) are made through Recreation.gov. 70.8% of tracked site-nights are not currently open for online reservation; 7 of 24 remain open. 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 15:19 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 Three Sisters Group Site (MT)?
1 three-night opening is showing, counting only runs where the SAME site is free for all three nights. The soonest starts Oct 4 at site Three Sisters Group Site. Confirm and book on Recreation.gov.
Which month has the most availability at Three Sisters Group Site (MT)?
October 2026, with 5 open site-nights in the current snapshot of 11.
When is the next open date at Three Sisters Group Site (MT)?
As of the Sep 18, 2026 snapshot: the next open date is Sun, Sep 27. 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.
Lakefront, hookups, your RV length, weekends only - set it as picky as you want.
We run paced availability checks for Three Sisters Group Site (MT). 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.