I've done the Wellesley-Bourne MMA route and the Sturbridge-Bourne-Provincetown route. The Sturbridge route has the big opening ceremony the night before, and a very low-key actual start. From Wellesley, the night before has the registration and CCTV broadcast of the Sturbridge ceremony. The Wellesley start had more music and speakers in '05 than Sturbridge did in '06. The Wellesley route is quick, and mostly downhill, with only a couple of hills. The Sturbridge route has more hills, I hit 44 mph descending one of them. The two routes join before the lunch stop at Dighton-Rheobath high school. Crowd support is great for most of the ride, but there are still places where you will ride along by yourself at times. It is all about raising money for cancer research and treatment. You will see people that do the entire trip on a MTB, you will see 70+ riders (the average age is 43), you will see amputee riders, you may see famous folks riding. Hundreds of people will thank you for riding. Every rider has committed to raising a minimum amount that is pretty high, $3600 to do the S-B-P. If you don't reach that minimum by the October cut off it is charged to your credit card. Registration begins in January and the S-B-P route is full by February. If that is interesting, go to http://www.pmc.org/ and browse through the site to get more of a feel for it. If you have any specific questions feel free to PM me.