Run 39:00 [3] 3.93 mi (9:55 / mi) +208ft 9:27 / mi
On the treadmill before work.
Walked 30 to start at 18:10 pace (3.3), then 3 x 10 minutes at 8:41 (6.9) with 3 min recoveries. Recovery at 18:10. Had to drop pace the last 3 mins or so of the last set to keep HR down. Better every day.