Smeared the Glide on, put on socks and shoes, it felt fine.
Walked, it was feeling fine.
Hit 4 miles, and hmmm, doesn't feel quite as fine.
But, I was only planning on 5 miles, so I headed home and hit the door at 5.05, peeled off the shoes and socks, and looked... same damned spot, a little bit red, a little uncomfortable.
So, I dunno...Since it happens in different shoes, I'm guessing it's the way my foot strikes the ground, or more likely as I rotate through the step, the way I push off the ground with that foot. I'm not sure what's different--a few weeks ago I was doing 8-9 miles a day without any problems.
We'll see how it goes tomorrow...I have 8-9 planned, but am also walking a route that will get me home in fewer if need be.