Personally I was thinking something in Northern Montgomery county would work well. Like the Poolesville area. There is another BF member who pretty much hangs in the road forum that has a nice 50ish mile route in that area already that is nice. I figured his ride is tried and true, so I was going to start with it and maybe see if I can plot a route starting closer to DC that picks up his, and then comes back down.
I just haven't had any time in the last week to work on it.
-D
Second to last weekend in april works for me though.