The Walk by Richard Paul Evans.
A man reduces his life to the basics, by selling everything and taking a walk across the country, after his wife dies. He hears tales from various people living in Washington State, including a woman, who runs a Bed and Breakfast, who has had out-of-body experiences.
After being attacked by thugs, Alan has an out-of-body experience himself. Will he find what he's looking for? Will a woman he meets by chance, nicknamed Angel, help him?
Miles to Go is the second book in the series.