I did the 50 mile route 3 years ago. The temperature at the start was literally about 30 degrees and it rained like crazy the night before.
The route was more hilly than I thought it was be. I had just started riding again so I literally signed up with my buddy a week before and rode it. It's probably not as bad as I thought it was because I wasnt in shape. Still, it was a great ride and very scenic!