But he explains why it is he came to running: to keep thin and fit. He has just wound up his jazz cafe to become a full-time writer and the sudden sedentary life has piled up the extra pounds. These, however, are the bare bones of the story. The book is, ultimately, about the allure of long-distance running, about Murakami’s articulation of something runners know but often can’t express and something the rest of us can only wonder about.