Great maps available at the Nittany Mountain Bike Association website.
http://www.nittanymba.net/
on the menu bar on the left click Maps then Races. Stoopid 50 Maps.
Dynamite loop of premium PA singletrack. Rocky, smooth, fast and fun. All rideable trails. Completely radular.
From State College take 322 East. Turn Right on to Crowfield road after the sign for Penn Roosevelt State Park. Follow to the park.
http://www.singletracks.com/item.php?c=1&i=2092