When I tell people that I race my mountain bike, they sorta know what I’m talking about.  Similarly, people know basically what road racing is - they can’t really comprehend the feats of endurance involved, but they can at least visualize what is happening.  This is not the case with the discipline known as cyclocross (CX).  I know that the first time someone tried to explain it to me, what I visulized in my head was nothing like what it ended up being.  My first thought was accurate though: this sounds insane…and it is.