Foot Pain

I had the pleasure of getting a short training run in this morning, but ran into an odd issue during it. It was structured 10' warm up with 4x20" strides. Main set was 20' at LT or 5k pace, followed by a 10' cool down. Simple enough and not the first time I have done this work out. I chose to run on a 14th mile track this morning due to me hating the treadmill. I've ran this track, with these shoes before and never noticed this issue. The issue was hot spots in my feet. I land more towards the back of the balls of my feet, not quite a mid foot or a fore foot, but between them. While trying to stay conscious of how I'm landing and pushing off, I couldn't get it to go away. It started toward the end of my warm up, around an 11' pace. I noticed my shoes felt loose, so I tightened them and took off at 5k pace, around 9:45 pace, it kept getting worse. I walked 2 laps and it subsided a bit, but picked back up when I started running again. The heat felt like it was at the surface level. I finished what I could, went to the locker room and checked my feet. Didn't notice anything. No rashes, blisters, or fungus. Skin wasn't dry or wet, at least not more than I would expect after running. The best way I can describe the pain is a callous being dry and ripping open if that makes sense. The shoes have less than 50 miles on them. I'm thinking maybe the socks are old and have lost elasticity, so they aren't hugging my feet as well as they should be, maybe. Just thought I would ask here before seeing a podiatrist, in hopes someone has encountered something similar. Thanks in advance.