4 this morning between the rain showers. On a lark, I tried to get my Polar HRM to pair up with Nike+, and it worked! Some combination of iOS and Nike+ updates seems to have resolved whatever was going on. I got HR during the run, but it still needs work because the average was not displayed once I finished. Anyway, staying in my zone yielded ~9:30/mi. I think I was overall faster on Monday with elevated HR and a couple of half-block walking spells.