The 2018 Skull Valley Loop Challenge is a 54 mile CCW loop that starts and leaves from the historic downtown square in Prescott, Arizona. More details can be found here.
For a interactive map on TrailForks, please follow this link. From that page you can download the route to your TrailForks app or as a .GPX, .FIT or .KML file. Just look for the download button or use this link directly.