It turns out that Kansas really is flatter than a pancake:

In this report, we apply basic scientific techniques to answer the question “Is Kansas as flat as a pancake?”

While driving across the American Midwest, it is common to hear travelers remark, “This state is as flat as a pancake.” To the authors, this adage seems to qualitatively capture some characteristic of a topographic geodetic survey 2. This obvious question “how flat is a pancake” spurned our analytical interest, and we set out to find the ‘flatness’ of both a pancake and one particular state: Kansas.