Originally Posted by Derek Weaver
Thanks for the link, I bookmarked it. If you don't mind me asking, why don't you like CFE? I've never trained for a marathon, but I used to CFE to lower my 3 mile run for the USMC PFT, and my 5K went from 22:33 to 18:53. Certainly nothing spectacular, but I took nearly 4 minutes in about 3 months. I realize that's a comparatively short distance, but what is the shortcoming of CFE for longer distances?