Hartwick Pines State Park has 20 miles of multi-use trails. All trails are open to hiking and cross-country skiing; some permit mountain biking (15.5 miles' worth). Hunting (seasonal) is also allowed in parts of the park, and signs indicate where. You can get more information and trail maps from the park office.
The extensive Hartwick Pines State Park is one of the largest in Michigan's Lower Peninsula. The scenic region is marked by rolling hills overlooking the valley of the east branch of the Ausable River. You'll also find several small lakes and unique stands of timber, including 49 acres of old-growth pine.
Parking and Trail Access
Hartwick Pines is located in Crawford County, Northeast of Grayling on M-93, Exit 259 off I-75.