Weather folks promise best temps/humidity since May! Meet at Miller's Grocery at 7:30PM for the same 24 Mile Big Loop as the 5:30PM ride.
http://ridewithgps.com/routes/174363
Bring all the lights you can find and a reflective vest is a good idea too. I've got one extra vest if you want to borrow. No hammering recommended as you can't see far enough ahead to react to obstacles or wildlife in the road.