A quick google of trek pilot turned this up for the trek pilot 2.1 :

Brakeset Cane Creek 3 long reach w/Shimano 105 STI levers

I think the whole pilot series was equipped similarly. Go to the trek website, select your year, and model, and then detailed specs and see what it says about the brakes.

You may prefer 650C if you want skinny go fast tires, or I think Deb W has two wheelsets she interchages, a 650C and a 26" to accomodate a wider range of tire types. For each you'll need to adjust the position of the brake pads, but if you have the long reach calipers I think you'll be able to do it. It will also reduce toe clip overlap if that is an issue for you.