Openings · last 7 days
0
01 · Detected Opening History · the openings record · file CS-273342
When Triangle Lake Campsites reopens
Triangle Lake Campsites's openings record: every site-date Campsite Sniper detected turning available, logged and time-stamped. Refreshed hourly.
Openings · last 30 days
3
Openings · last 90 days
3
Only 3 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 – Oct 15, 2026 · of 2 monitored sites
Of the 56 tracked site-nights (Sep 18 – Oct 15, 2026): 17 open for online reservation · 39 reserved.
Where the open windows are
69.6% of tracked site-nights are not currently open for online reservation. 17 of 56 remain open; here is where they are.
Load status
Sep 18 – Oct 15, 2026Not open online69.6%
Open site-nights17 / 56
Reserved (of online inventory)39 / 56
Weekday openings12
Weekend openings5
Of the open site-nights on mapped sites, 12 fall on weekdays and 5 on weekends (Fri–Sun).
Open dates by month
Sep 2026 – Oct 2026October holds the most room. 12 of 30 site-nights are still open there.
Holiday windows
Sites open per night · of 2 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 |
|---|---|
| 002 | 16 |
| 001 | 1 |
The 2 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 27
Next open weekendFri · Oct 2
The next bookable night is Sep 27; the first open weekend starts Oct 2. Campsite Sniper can watch later dates for you.
Stays and site detail
17 open site-nights across 2 sites at Triangle Lake Campsites, from the same hourly snapshot as everything above.
Multi-night stays. 2 2-night, 2 3-night, 1 7-night openings where a single site is free for every night, per Campsite Sniper's current snapshot — soonest Sep 27 at site 002.
RV length. Longest recorded site here is 32 ft. 1 site takes 25 ft.
All 2 sites with current availability
| Site | Max RV | Hookups | Open site-nights | Longest run | Dates |
|---|---|---|---|---|---|
| 002 | 16 ft | None | 16 | 11 nights | Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 2, Oct 3, Oct 4, Oct 5, Oct 6, Oct 7, Oct 11 +4 more |
| 001 | 32 ft | None | 1 | 1 night | Sep 28 |
About Triangle Lake Campsites
Overview
The Munising and Rapid River/Manistique Ranger Districts of the Hiawatha National Forest offer a variety of camping experiences. Many are located on inland lakes in a rustic forest environment with no drinking water. The rustic environment offers a wonderfully serene and peaceful setting for your next camping experience.
Recreation
Visitors will be able to enjoy swimming, berry picking, and fishing at these dispersed campsites. Licenses are required for fishing in Michigan waters.
Our management efforts seek to provide for quiet, peaceful recreation opportunities in a semi-primitive setting.
Swimming conditions vary by site. Site 1 has excellent swimming conditions, swimming is NOT recommended at site 2.
Pine Marten Run (PMR) Trail acces varies by site:
For site 1: trail access is via FR 2734, where the trail intersects the road approximately 0.2 mile east of the campsite. For site 2: trail access is via FR 2452, just east of the campsite.
Triangle Lake boasts a strong fishery of northern pike, smallmouth bass, bluegills, crappie and perch. A boat access and parking area for day use is located at Site 1. This access is very sandy and turn-around space is limited. Carry-in access is recommended. There is no boat access at Site 2.
Facilities
There is a primitive toilet located at site 1.
There is NO drinking water.
Lake Name: Triangle Lake
Number of Sites: 2
Maximum Number of People Per Site: Site 1 (24), Site 2 (8)
Maximum Number of Horses: Site 1 (4), Site 2 (2)
Toilets: Yes at Site 1
Boat Access: Back-In At site 1
Lake Size (acres): 169
Natural Features
Located in the heart of the Ironjaw Semi-Primitive Area, Triangle Lake is managed for both motorized and non-motorized uses. Both campsites on Triangle Lake are located on the non-motorized Pine Marten Run Trail and horse camping is allowed.
Site 1 is a long, narrow site located on a level, sandy strip of land between the lake and a small wetland pond. The site is about 100 ft x 30 ft and is suitable for three families and trailers. There is good access via Forest Road 2734, however turn-around space is very limited . Site 2 is located in a wooded lowland. It is 40 ft x 40 ft and is sutable for one family. Although the access road is in fair condition, trailers are not recommended because of the limited turn-around space.
Nearby Attractions
There are a number of horse, bike, and hiking trails within minutes of several of the sites. In over a mile from these campsites, visitors can expect to find: bait shops, general and grocery stores, gas, a pay phone, trailheads, a fishing pier, biking, and kayak/canoe rentals.
2 monitored sitesRVs up to 32 ftNo hookups2 shadedWaterfrontLakefrontPets OKFire pitsMax party 24
Getting there
From Manistique, MI: drive north on M-94 23 miles to CR 437. Turn left (west) on CR 437 and drive 4.7 miles to FR 2734. To reach site 1: Turn right (west) and drive 0.3 mile to site #1. To reach site 2: drive 4.2 miles on CR 437 to FR 2452. Turn right (west) on FR 2452 and drive about 0.7 mile to the campsite.
Rapid River/Manistique Ranger District, Rapid River, MI 49878906-474-6442 OR 906-387-2512
BoatingCampingFishingHikingHorse CampingHorseback RidingSwimming
View on Recreation.gov ↗ Get directions ↗
03 · Field Photos · roll CS-273342 · facility + sites
Photo gallery
Roll CS-273342 · Triangle Lake Campsites · Rapid River MI6 frames · facility + sites
FAQ
How do I get a reservation at Triangle Lake Campsites?
Reservations for Triangle Lake Campsites are made through Recreation.gov. 17 of 56 tracked site-nights are currently open (30.4%). Campsite Sniper has also detected 3 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 Triangle Lake Campsites?
Campsite Sniper detected 3 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.
Can I get a multi-night stay at Triangle Lake Campsites?
2 three-night openings are showing, counting only runs where the SAME site is free for all three nights. The soonest starts Sep 27 at site 002. Confirm and book on Recreation.gov.
Which sites at Triangle Lake Campsites fit a 35-foot RV?
No RV-analyzable site here has a recorded maximum of 35 ft or more; the longest recorded is 32 ft.
Which month has the most availability at Triangle Lake Campsites?
October 2026, with 12 open site-nights in the current snapshot of 30.
When is the next open date at Triangle Lake Campsites?
As of the Sep 18, 2026 snapshot: the next open date is Sun, Sep 27 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.
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 Triangle Lake Campsites. 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.