I haven't looked to see if I'm red in the face or not. I suppose if I thought I was unusually flushed, I'd check my blood pressure. I do occasionally, but never think to do it just after a run. I'm fair and I blushed horribly in my teen years, a true red Ball, so it wouldn't surprise me to be quite red during a run.
My C25K app tells me when I'm halfway done, and I turn around and head home since my route takes me from my house at the end of a dead-end road on out of the subdivision. My wife and I in our running and traveling days enjoyed jogging through a new downtown, or any new area.
And my total route is still 2.0, 2.05 miles, even with today's W5R1. I think the reason is clear enough: My jog and my walk are the same speed, and the iPhone app changes pace but within the same total time. I was 46 or 47 when Clara and I started jogging, 61 when I stopped. My usual pace was a 9-minute mile, my best perhaps 8 or 8 1/2, but with Clara I'd run about 10 minute miles. Apparently I'm closer to 15 minutes. Gotta work on that. Later.