Right, but understand this is an out and back course, so for every downhill on the outbound leg, the same stretch of roadway now has to be negotiated as an uphill grade. What I am stating is that there is some combination of road gradient that even negotiated in both directions is faster due to...
Perhaps my example was misleading. I'm really not talking about this instance - I only use it as an example. It has nothing to do with up and down drafts. There is a phenomenon, which has a name, that describes the physics behind the fact that in some instances a hilly out and back course can...
There is a scientific word/explanation for the phenomenon that a out and back course in a cycling time trial race can actually be faster than a flat course. For example, in Cherokee Park in Louisville, there is a 10 kilometer course that starts on the flats, then has a pretty good downgrade...