I'm riding a Cannondale CAADX with 700x35c Sammy Slicks.
It might be hard to judge from a video, but what do you guys think of those tires for this course (this is the race course):
I don't see any mud or water, so I'm thinking that the Sammy tires might be adequate. To date, I've used my CX bike primarily as a way to do intervals on a flat/fast/bumpy hardpack 9 mile dirt loop near work. I run with 30 psi front and 40 psi rear (160 lb rider). I'm not sure if this is optimum from a speed perspective, but it sure works for comfort. I haven't had any trouble with mild amounts of loose over hardpack.