Bearskin State Trail - The Bearskin Trail about a quarter mile west of Katherine Lake. It is an 18 mile semi-paved trail that isn't groomed in the winter. The surface is crushed granite and the trail is pretty level. A trail pass is required for biking.
No nearby designated paddling routes. The Minocqua Chain is real close is better for paddling than most paddling routes anyway. The water is clear and there is a lot of action to watch. It's an entertaining way to spend a few hours...or days, if you want! Sticking to exploring the shoreline of Katherine is not a bad option either, it's a beautiful lake.
The Cross Country Cruisers Trail System goes right across Katherine Lake. This club grooms 90 miles of trails that connect to the rest of the trails in Northern Wisconsin.
No nearby ATV Trails