Sioux Hustler Trail is a 32 mile lightly trafficked loop trail located near Northeast St Louis, MN that features a lake and is rated as difficult. The trail is primarily used for hiking and camping and is accessible from January until January.
Did a partial weekend trip up to little shell with 3 hikers, Myselff with good experience, one with quite a few trips, one with minimal backpacking but much canoe experience. Bring a map and compass and know how to use them as this a a relatively primitive trail. Get a good DNR map NOT the printable ones online. Watch for rock cairns and sawn trees. These are the ONLY markers. Comparing this to the SHT, it is much more "out there" meaning you are litterally in the the bush with, at some points, a very tight trail that can be easily lost. With that said it has been my favorite backpacking trail I have done, definately will be back to do the full. Note that the campsite along the first portage is impassable due to the portage being flooded 1/2 through, unless you like wading 4' water/
I liked turtles, but not after this...
A wonderfully remote and challenging loop trail in the Boundary Waters Canoe Area, northwest of Ely, MN. Though it's rugged single-track is ripe with roots, rocks and blowdowns, the trail is well worn and relatively easy to follow for experienced hikers. The views are spectacular as you loop around several lakes, across high ridges and through swamps, often using beaver dams as crossings. Water is plentiful and clear but the campgrounds are sparse (especially on the northwestern side).
Overall, if you like solitude and challenge, you'll find the silence and beauty of this remote trail as restorative for the soul as the exertion of it's multi-day 32 miles is for the body.