KJay, of course spinning counts!!! You're pedaling, right?

I did some online research on calculating miles for spin classes and there seems to be a consensus that "the average 60 minute spin class with a cadence of 60-110rpm translates to 14-18 miles". There's also this:

http://forums.teamestrogen.com/showthread.php?t=4852

I went to spin class this wed and joined BikeJournal later that night. Based on my own cadence and comparison to my outdoor rides, I estimated my miles conservatively at 17 (though, I bet we did more). I'm going to enter all my spin classes and judge my cadence as best I can - with entries that will stay in the 14-18 mile range. BikeJournal has a 'stationary bike' option on its list of bikes.