I talk about this experience not to brag about a personal accomplishment, but to express how much running has taught me about my art and my life. Yesterday, I ran the San Diego Half Marathon and after having done several of these, I approach them with a bit of healthy trepidation, as well as joy in aiming to accomplish something personally important to me. For everyone who has personally challenged themselves to do something you thought was "impossible" for you, this will ring true for you, I am sure. Running distances is a real struggle for me and I would say I have a love/hate relationship w/ it. So, four times per week or more, I kick myself out the door and on to the road - Sore calves, sore feet, are overshadowed by the mental challenges(which are huge) of getting thru yet another long run.