The Grafton Loop Trail provides 39 miles of spectacular hiking along a trail that connects a series of picturesque peaks and other natural features in Maine’s Grafton Notch, according to the Appalachian Mountain Club. You will witness the stunning beauty of the Appalachian Mountains. The 38-mile trail is a true winter wonderland once the snow covers the ground. Be well-prepared because this is a strenuous hike and the winters in Maine are not mild. The snow is very stable so the risk for avalanches is low.