Jay Cooke State Park Professional Review and Guide
"This trail is the first in this book that explores the spectacular North Country. The combination of superb trail conditions and the surrounding settings makes the riding up here tough to beat. The coffee-colored St. Louis River rumbles through the park over massive slabs of graywacke and slate, and rock formations of the same jut from the earth all along the ride (the river is only partially visible from the trails, but you can get a close-up view from the swinging bridge adjacent to the park office).
This particular region of Minnesota is home to red clay soils, so expect some parts of the trails to have perpetual soggy spots, especially after wet weather. Each of the loops at Jay Cooke is short and is over much too soon, but the journey to reach the loops adds on enough mileage to make this an excellent place to spend a few hours on a fine fall day. The surrounding hardwood forests offer excellent food and cover for a wide variety of wildlife, and your chances are good to spot white-tailed deer, grouse, pileated woodpeckers, and even black bear. Tread: Hard-packed dirt singletrack with some grassy sections, and a short segment of the paved Munger State Trail."