Had a great time doing this with my teen daughter and her friend in early-early spring. We literally didn't see another person the entire time we were in the forest. The western part of this loop is fantastic - it feels wild, it's not super easy, the terrain is somewhat rugged. I think they could do a better job of keep the trail off roads on the eastern and northern parts though, as it ruins the ambience to walk along a road. Still, this was better than we expected, and it was fun to get in some good snow-free backpacking while Minnesota is still covered in snow and ice.

We stayed at the Brown's Hollow camp, which was quite a lot less primitive than I expected, given that it's a filter and cathole camp area - there are big, proper fire grates and benches in predefined camping areas. Given the iffy weather, that was an unexpected perk. I'd certainly do this again.