...you come up on a runner out for her Sunday run in the park and you get really excited because you realize you're going to actually pass her and then as you pass her, you realize that your "competitor" only has one leg and is running on a prosthetic.
...you pass a woman running on a prosthetic and think to yourself, "Whatever. She's handicapable. One-legged people can run pretty damn fast these days" and you still feel some victory from passing someone.
...you see a woman run next to you and are instantly grateful to realize that your sports bra fits you, and it fits you well. You then watch that woman bounce away, thinking "ow, ow, ow, ow, ow" in cadence.
...you see a grey-haired woman running lightly and quickly, passing you by. At first you think that she's quite talented for her age. Then she turns around and you realize that she's about 7 or 8 months pregnant. Prematurely grey, or pregnant at an advanced age? Lots of both in NYC.
...you realize that you are chafing, and you are chafing badly. Someone please remind me to put Body Glide under my arms next week before my last 20m?
...you suspect that the New York Times is obviously reading your blog, because otherwise why would they run a story about running coaches being unnecessary just days after you blogged looking for input about running coaches? (Props to the article for head-on tackling Ryan Hall's "God is my coach" thing rather than just glossing over it and giving Hall the credit for self-direction.)