Today was a run of the mill 10 miler. Though it was 2o degrees and felt like 8. Yesterday I did a 4 mile recovery run while it was 17 and felt like -1. I'm plenty warm out there, even had icicles in my hair from sweating today.
But ya know what, I think I have to work harder when it's this cold. Or maybe I was having a slow day. I dunno. I wasn't pushing it though I was by no means going fast. Now I'm just pretty tired.