Ellipti-kill-my-calves

So I was planning on my gym night since we are having the blizzard of 2010. Everyone knows that my Wednesdays are one of my long days. Two of my friends asked if I was going to be there and wanted to see if I wanted to work out with them as well, however they wanted to do the elliptical. Since I always go for a conversation I said yes!
However I got there early so I could get a run in. I was able to get 4 miles in prior to them arriving.
Then I jumped on the elliptical for 1:05... and let me tell you this... From a lung perspective it was pretty easy, but from a stretching and calf perspective I was rocked! My legs are dieing today almost like I pulled a muscle. Very weird.