21F. Down to the track today for 16 x 200m, with 200m jog recoveries. The goal was my theoretical 1-mile pace, which I would round to a nice even 40 seconds/repeat. I thought it might be tough to crank it down to that pace in the cold but it turned out not to be an issue.
Averaged 39.02s, which is about 5:14 AP; likely faster than I could run a mile but it's all a guess anyway. Fastest was 36.7 (4:55 AP), slowest was 40.7 (5:27 AP). Standard deviation of 1.02 seconds. I had a lot of fun with Excel this morning.
A lot of times they would see-saw back and forth between 38 and 40; I could always tell in the last 50m if I had accidentally started out too fast; those were usually the 37-38s. They would almost always be followed up with a 40. Toward the end, they were more consistent.
Long, uphill "cooldown" back to my house, followed by some coughing and wheezing at home. | 
