That was hard! I know its not meant to be easy but wow! To be fair though my pacing was all off, I was running a smidge faster because as soon as I stepped out of the door it started spitting and I really wanted to get back before the heavens opened.
Laura is right, I do recover faster in the walking breaks, feeling great afterwards despite having to drag my carcass through this run. Does it matter that I found it so hard? should I do it again or is the fact that I did it enough to progress to the next run?