I was entranced with Grandma's travels, too. I rarely read fiction, although anything Randy Wayne White writes can keep my interest and I have gotten so into his books there are a couple I did not put down except for coffee breaks.
Almost everything I read is in the Non-Fiction isle!
About three weeks after I graduated high school back in 1970 a fellow named David Kunst started a walk around the world from the neighboring town of Waseca, Minnesota. His brother John was going to walk around the world, too, but, was killed by bandits in Afghanistan and Dave was also shot. After Dave recovered back in the USA he went back to Afghanistan and started at the sight of the attack on their camp and he did indeed complete the the Around The World Walk. I know there is a book about his adventure and I intend to work it into my reading list before winter gets here on the prairie. Dave must be in his early eighties now and living in California. I was there when he started the walk and listened to the speeches and I was there when he returned to finish the walk. Here is a link to his website>>>
http://davekunst1.com/