I received a press release from Canaan Valley on February 1 stating that 30 kilometers of marked trails are open, thanks to an abundance of natural snowfall. There's a Nordic Center located within the resort, and a trail that connects Canaan Valley Resort with Blackwater Falls State Park. You can get more info by contacting John Northeimer at (800) 622-4121.
Hope that helps.
I didn't get to try it this weekend as the backcountry access was closed. ;-(