If on leaving a trailhead, you only glance at your watch to have an idea of when you need to be back, parts of this book will be for you.

If when crossing a desert valley, you wonder what it is like to run in the silence and solitude way out there, parts of this book will be for you.

If wading across a beaver pond during a run seemed the only logical thing to do, parts of this book will be for you.

If you ever thought of running fifty miles in one day, parts of this book will be for you.

If you sometimes went out after sunset for a run because you saw a cloudless sky and you...