Moved from CO
I moved from CO about a year and half ago and have been surprised by how good the riding is here. As others have said, Patapsco SP is SW of Baltimore and Loch Raven is North-both are close and good in different ways. Lots of other options within a short drive in PA, VA, and WV. The terrain is much different, a lot slicker, muddier, tighter trails and you'll miss the long sustained climbs. You have to drive a bit to get to the bigger climbs. Its very easy to ride year-round here. We actually picked our house location based on close proximity to trailheads. The road riding north of Baltimore is also great. Drop me a PM if you want more specifics on trails, housing, etc.