The setup for this book is truly unique; told over the course of a six hour, twelve mile, world record-breaking swim Tully recounts what has brought her to this moment interspersed with the physical and mental struggle of swimming a marathon. I appreciated the way the story was told, but struggled with Tully‘s selfishness in regard to her friend Arch. It certainly looked hopeful at the end, but I had hoped for a more in depth reconciliation.