There is a great, mostly flat 4 mile cross country ski trail at Courtney Lake which is groomed on Thursdays. The trail is used as hike, bike, and horse trail in the summer. Says CJ
This lake is so wonderful. If you need a site to stay AmericInn Silver City is a wonderful choice; Twin Lakes State Park is a lovely site any time of year. Nearby there is a great 4.4-mile-from-start-to-finish category I-IV whitewater run, the Newberry Road to S Laird Road
sector of Sturgeon River - West Branch. This sector of Sturgeon River - West Branch is a mid difficulty run for whitewater kayaking or rafting.