today i saw the result of a clear intention, as i was running i did set an object as to where i was heading and where the end was,  giving it some kind of a last push that was going to be harder than before (faster). so my intention was clear (the object was red) and as i was running i solemnly fixated the object and some kind of energy kept pushing me so i ran even faster than in the beginning, and somehow my awareness shifted from the injuries that i have and was brought back to the feeling of the past (how i used to run), by the time i started to get closer and the object i did set my intention on started to look bigger and some new information coming in, the intention wasn't as clear as it was in beginning so instead of going faster i started to run slower but as the red object was still set it wasn't as slow as in beginning.

many other new informations didn't let me go for the extra mile.

when do the intention for the extra mile needs to be set? and also how long is it?