Map Lake Mary Plains Pathway M-69 & Lake Mary Road, Crystal Falls, MI 49920 Add To Trip WebsitePhone: (906) 875-6622 Description 10 mile groomed ski, hike, bike trail. Three loops totaling 19 km are marked, groomed for novice and intermediate cross-country skiers. Trailhead at Glidden Lake State Forest Campground. Trail maps are available. Videos TripAdvisor® Traveler Reviews More To Explore Categories: Biking Hiking Snow Sports Recreation City: Crystal Falls Region: Western UP Although the MEDC uses reasonable efforts to maintain the accuracy of the website content, it is not represented to be error free. Read legal information.