Zones?

How do I decipher what Heart Rate Zone I should be training at for each run/week while utilizing the Half Marathon Course? I am training for the Brooklyn Half in May. I will be following the Max 30 miles a week plan. On days where I incorporate the weekly workout, if my weekly chart calls for 5 miles and the workout consists of meter repeats equaling 2 miles, do I just run an easy 3 after completing to total 5 miles or are the weekly workouts done separate and not included in overall mileage? Meant to ask this on tonight’s Coaching Call but I was on the way home from work and was unable to do so while driving.

Thanks

Jonathon