Temp 21, DP -5. Did 1 mile pick-up on the track in 6:36. Felt good - used inhaler and took pepto before the workout, and I didn't have the same breathing issues. Also tried wearing a facemask, but I couldn't run with it - too annoying.
Wore the float rides -they have fantastic grip on the track. Not sure I like them as a mile shoe, though.