I am not much of a runner, Easdraagl, however, I do like to walk everyday. After walking the same route(s) for awhile, the whole thing tended to become boring and I had difficulty in really wanting to go.
I adopted a technique to use while walking...to make each walk a bit different. I make a list in advance and create a theme for each day of the week.
Some days I will focus on sounds...as I walk I really try to hear the things as I take the journey. My footsteps, my breathing, and any other sounds I encounter along the way. To really listen and be aware of these things...not making any judgments as to what the sounds may be, just to let my mind relax, and not to reason, but just to experience.
Some days are color days...picking a particular color, I then will look to see how much of that color I see as I make my way along my route. Each "color" day, I will choose a different color, to maintain variety.
Some days are used to maybe see how many different types of birds I might see...
There is quite a large list of things that can be added into the running, that normally might be unseen, unheard, unfelt and/or unnoticed. By creating such a list, when you make your run, each journey will hold a slightly different experience.
Thus, you are no longer just running, but having an adventure of discoveries and new experiences, each and every time.