Boiling Frogs and Gradual Adaptation

Every new distance seems impossible when you first begin to wrap your head around it. Think about the first race you ever signed up for that you thought was really long.  Before you started the training, the race distance probably seemed almost insurmountable, right? I mean, how could anyone go X miles? The very first distance I ran that made me think: whoa, this is going to be LONG was a 6 mile run I did during a high school crew practice, circa 1989. We ran daily, but never that far. But, we had gotten in trouble, so we were punished by running 6 miles, …