For some reason I was putting off week five. I did week four 2 extra times. The title of week 5 - RUN ONE, make me think I'd be running continueously for 6 or 7 minutes. Well I just ran it today and was seriously glad that I did and accomplished it no problem. Although it's cold here I ran it outside which I enjoy more than the treadmill. I tracked my run with my Fitbit and found that it took me about 41 minutes and total length of walk/run was 3.2 miles. I'm feeling pretty good about that for being a beginner and an old geez! Ha. It's true that using this system you really can see the improvements week after week.