Went to track for some mile repeats. Goal was to do 3 or 4 around 7 min pace. I was about dead after 3 so called it good. Stayed very close to 7 min pace but may have faded a few seconds on the last one. Seems like these should be easier since I used to run 1/2 marathons faster than this. Guess it's just part of getting old and being 5-7 lbs heavier than I used to be.