Optimizing endurance is great! You can push more forward by increasing incline rather than focusing on distance.
Discussion
It’s more important to me to maintain a good posture than risking deformation further in life. I am lucky to have variable natural landscapes on my way and I like to obtain healthier results by making best use of them, so I start with jogging down the hill until I reach the sea as a good warmup then I walk on the sand letting the waves reach my feet to enhance the circulation, then I walk
on plain streets until reaching the train station where I take a little break before climbing up the hill and end my exercise by walking up stairs stretching every now and then a long the way or after getting back home. Sometimes I add weight by carrying a shopping bag. I find this less boring than going to the gym and multitasking.