
I just did a long run yesterday and only did 16 miles in 3 hours while holding to the heart rate zones. It's simple to follow and I like it because I don't try and overthink my workouts.
I felt this might be better for me so I don't overtrain and not allow for sufficient recovery. So this HR plan doesn't give certain mileage requirements for your runs, just heart rate zones and time in each as dictated by the workout. I've just started running consistently a few years ago with a few 5k races to keep me motivated. I'm 49M and have been doing the intermediate HR based marathon training plan to get ready for my first marathon on April 3rd.
