Based on 2000m times posted in previous post my estimated V02MAX is 46.65 @ age 42 is considered excellent for my age. Guess I should be happy with that but feel I can improve upon this. Better technique / form may yield better times. My avg. HR for this effort was 176bpm for 7.55min but hit 182bpm for last 500m @ 2.01min. So no slacking here. My target VO2 is 52 between now and June. Not prepared to give up all my guilty pleasures but will cut back.