No, this book is not about running, but it’s about a trail, and hiking and running go hand in hand for many of us. (Besides, nearly any trail you can hike, you can run.) Grandma Gatewood’s Walk is about the person known to nearly all Appalachian Trail hikers as someone who make it “a thing,” seen almost as the grandmother of the trail itself. I was drawn to the book because of the cover image. “Grandma…