I didn't post about my 1st, so I will post about my second.
The route that I'm most comfortable with is 25 miles round trip. I tried a shorter route, but had to many driveways and a bumpy road to deal with in town. My bike is a Sun Key West, not my ideal bike, but the best I have right now. I have enjoyed both rides, and believe that my car will be sitting at home more this summer.