These stock plans we sell need to be close to a one size fits all plan. We do not know who will be buying and using the plan. We consider this the minimum workout. What is the maximum? That is the part we can’t tell you because each person will be different.
The reason that each of these uphill weighted hikes are the same duration is that you will go farther uphill each week. So the work done will be more in the same time. You can also progress these by adding weight and using a steeper hill as well as going farther. We are trying to present a simple easy to follow approach in these plans