When you get in the zone, your focus is on your run: With all that thought going to your pace, your exertion level, and the calculations of how many more minutes you have left in your tempo, you are left susceptible to some embarrassing midrun situations. We’ve all stumbled on a crowded trail, then looked around furtively to make sure no one noticed. Or had to pause our workouts to sneak into the nearest bathroom when long runs made our stomachs rumble. But we wondered: Are there any midrun situations that really get you blushing, even well after the fact?...