After my first big ride with my Dummy this weekend, I can tell you that of course it is marginally slower than my Trek with 700c wheels or the Ross Old Gray B@stard with 27" wheels, but not all that much. Even if I was a racing guy, I would never enter the Dummy in an event...well come to think of it, that sounds like something I would do, but... slower is only relative, and not "slow as Moses" slow.