The Lumberjack trail is an ungroomed ski trail just outside of the town of Boulder Junction on "Old K". A half mile run through tall pines brings you to a to a bridge over the White Sand Creek. Stop and linger on the bridge for a minute, and think about the puzzling nature of time.
Then, you have a nice six-mile figure eight trail, not difficult, except for the fact that it isn't groomed. In my book, that is a "feature not a bug". If you want groomed, take the trail on Saturday, and you will have it groomed plenty for Sunday.
Take the little jag to Fishtrap dam on the Manitowish River, where you can contemplate time some more, or if your mind runs more towards active philosophy, contemplate whether a nice foot bridge would be progress or the end of civilization.
Further along the figure eight, you will see another option that takes you to a different parking lot on Hwy K near Concora Road. This is a beautiful trail, with lots of hills and a great view of White Sand Lake-but be sure to take it when you have lots of time, some food and water, and a partner to help break the trail. If you are really motivated, you can go all the way to the Escanaba-Pallette trail. But that is for another day.
On your back to Boulder, stop and take a look at the new Winter Park on the left. Where did you put those ice skates?