Originally Posted by
david101
You weren't very polite. And ignoring the caveats in my original post, and stating that I'm wrong because of those same caveats isn't very helpful.
Your caveat was about "wind direction", which is a factor that's going to vary from ride to ride and is not necessarily related to speed. You didn't mention air resistance or drag, which is directly related to speed of travel. The caveat you didn't make swallows the general rule that is the "spirit" of your op.
The "spirit" of your post is wrong because wind resistance is THE predominant factor.in determining energy burned per mile, so your op ignores the basic nature of bicycling as an activity.