I am on weeks 17 and 18 of the plan. I totaled up the hours for the runs and bikes. I then looked at the time in zones. At this stage it is emphasizing more zone 1 and 2 . Is that right? I would not expect 20 % higher intensity?

Week Date Workout Zone 1 Zone 2 Zone 3 Zone 4 Zone 5 total
17 10-May CF10 25 35 60
17 10-May RC13 22 10 32 64
17 11-May CRE13 120 120
17 12-May RAe12 90 45 135
17 13-May CCI6 22 10 40 72
17 15-May Cae16 150 180 330
17 15-May Rae1 29 30 59
458 310 72 0 0 840
54.52% 36.90% 8.57%

18 17-May CF11 40 50 90
18 17-May RCI3 22 10 32 64
18 18-May CRe13 120 120
18 19-May RAe9 90 60 150
18 20-May CCI6 22 10 40 72
18 22-May CAe17 165 180 345
18 22-May Rae1 29 30 59
18 459 310 72 0 0 841
54.58% 36.86% 8.56%

Thanks for the information Matt. I probably should have also stated I am in the age 70 to 74 age group and have some stiff competition for a Half Ironman World championship slot. So should I taper a little more?