10.25 miles, averaged 7:25 w/ 4.25 @ half marathon effort to a touch faster. Warmed up 2 miles, then started a AT tempo but decided to drop the pace a bit after the first few hundredths, so the first mile was slow, but sensible. Second mile was icy/snowy/twisty. 6:44, 6:51, 6:35, 6:29, 1:38.5 (6:28) average 6:39/40. A bit slow due to the second mile, but I feel okay about the last 2.25 given that my throat pretty much hates me right now.
I think this my first sub-20 degree tightless run. I am trying to learn Joe's toughness, and given that I have more insulation this shouldn't be a problem, but I think I find my tight-wearing threshold (sunny, 20, and calm).