Let's talk. Day in, day out, I see a lot of attacks on walking in any way, shape, form or speed on letsrun.
Yes, I get it, it's not letswalk.com
However, in training, there are a lot of factors (and possibly efficiency) that are helped because of walking.
In marathons, some people use walking as a "break" to get the body back on track.
In fact, and I know this has no scientific backing, but I will say it anyway:
If someone runs a continuous six miles and stops, and someone runs 4 and walks 4, then I would almost assess that the work output, calorie count, and efficiency are practically equal.
So besides false machismo, which has no place here because none of us are all that, so stop fronting...what is the real problem here?