Millstone Hill Touring Center, Barre, Vt.
You might not have heard of Millstone because it’s only been open four years. But once word starts to spread about this unique 70-mile network, expect it to rival the Kingdom Trails as one of the top mountain biking hubs in the state. A century ago, Millstone Hill was home to more than 75 quarry operations. Today, single tracks weave up and down the forest leading to these quarry sites, where you can peer out over the water from atop a large rock pile. Novice riders will also find miles of old quarry roads offering far more moderate biking. Lodging and camping are available. www.millstonehill.com/touring.