Also, I am considering taking a ride in the Lancaster County area. Some nice towns with good cycling roads in between them only about 1/2 hour drive away... probably within cycling distance for some people.
The Lancaster County Covered Bridges Metric Century (or portions of it) would be nice, and it is pretty close.
The new Hershey A Ride on the Harrisburg club's web site goes through Mt. Gretna. That place is worth seeing if you have never been there. Take a tour around the south side of town. Many of the streets are named after colleges and there are many gingerbread fairy tale-like houses. Unfortunately, the historic Jigger Shop (ice cream, burgers, etc. with a giant outdoor deck) closes after Labor Day, but there is a deli and a pizza place in town.