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About
Located in the heart of the Ironjaw Semi-Primitive Area, Triangle Lake is managed for both motorized and non-motorized uses and our management efforts seek to provide for quiet, peaceful recreation opportunities in a semi-primitive setting. Both campsites on Triangle Lake (169 acres) are located on the non-motorized Pine Marten Run Trail, which is open to hiking, mountain biking and horse back riding. There is no drinking water at these campsites. 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. Triangle Lake is a good fishing lake with a nice population of northern pike, small mouth bass, bluegills, crappie and perch.
Around this stay
Nearest surrounding services and recreation within ~25 mi — not on-site amenities.
- 1.1 mi
trailhead
Pine Marten Run Middle Th
- < 0.1 mi
recreation site
Triangle Lake Boat Launch
No dump station found within ~25 mi. Plan dump access before you arrive.
Forest road access near this stay: DOGGIE SPUR AA in Hiawatha National Forest. Motorhome access is listed as open on the nearest MVUM segment — verify current restrictions.
Contact & access
- MI
- OPEN
Source and verification
Last verified: 10/5/2026
See the Sources tab for provenance detail.

