The comment made earlier was a good one. the road bike will not convert well to cross. I don't know anywhere in the country really that I would want to ride cross without a little bit of a knobby - and you need wider area in the triangle to accomodate those tires. I'm not sure there are any tires for a road bike that will work for you unless you are a damned good bike handler! You could go wider, but it would never been optimum and I think you would be totally frustrated

The track racing you are talking about is a really specific; the bikes do not have brakes, etc. So, I don't think there is any bike that can do cross that can do track. I think you really need brakes for cross! Unless you want to fred flintstone it!

I've used a mountain bike for cross, and it worked okay, but to go the other way is just probably not going to work

spoke