I have never experienced what they call a runner’s high, but I will say that, during long runs my experience of time will be altered.
Having gone 8 miles I will turn around and think, wow, I’m a long way from home, this will take me forever to get back! but then by some process that I never get to the bottom of, I get closer and closer to home — then I’m home.
.i`` * ^ / . . . . . ` `~ 