I did a decent road marathon to prove a point, and this really annoyed the minimalism nay sayers.
This stirred up the ultra running community quite a bit - read the inside story.
Well guess what - it isn't. And that's why I can keep running long on a very unimpressive training milage.
Why would anyone want to do that? Well, to me it's really the only option if I want to finish the race in good form.