derath- you're the closest. It's to the NorthWest of Frederick, about a 2 miles outside of Boonsboro heading for Rt.67 towards Harpers Ferry. It's actually part of this tour except we started near Shepherdstown at a parking lot next to the C&O Canal-very nice route.
http://biketours.marylandmemories.org/southmt.html

Noracer- thanks for playing. Those routes for the ride are pretty awesome if you ever get a chance to ride them. Alot of climbing once we get out west past Seneca Rocks. I'll be on them in a couple of weeks.