A couple of guys in the Bike Club did that a month or two ago and said it was a pretty nice ride - all up hill- and pretty rough. At Geiger they came out right behind their new shooting range. Supposedly 7 miles roundtrip.
The other story I heard is that you have to go through this trailer park down on the river and the owner is rough on trespassers. Of course, if you're jdoug he's going by so fast nobody would catch him. Me puffing along would warn him I was coming ten minutes before I got there.
Anyway, has anybody tried this route before? Sounds like it would be worth trying.