Ithaca was selected as a top 5 place to live for mountain biking by Bike magazine in 2002. This is probably the best of the nearby state lands. Many miles of technical singletrack with a multitude of fellow riders on any nice day. Numerous man-made obstacles especially in Area 51. Trails are maintained by a local bike club working with DEC. Located in the Finger Lakes region of NYS plenty of wineries and microbrews to sample and Ithaca has a great scene in which to enjoy the night as well as great places to shop. Shindagin is probably the premiere place to bike in central NY.
From Ithaca take state route 79 southeast, right on Creamery Rd., right on Braley Hill Road. Pick a trailhead.
http://www.singletracks.com/item.php?c=1&i=813